Jeep xj heat not hot. 0 -90 (partsjeep) Jeep Grand Cherokee 5.

Jeep xj heat not hot KaiserMan NAXJA Forum User I did feel up the heater hoses. Placing a closed ball valve either between the t-stat cover and heater core or between the heater core and water pump eliminates the bypass loop. As the interior’s heating relies on the engine’s cooling system, checking the level of your coolant is the easiest place to start as a low coolant level may prevent coolant from reaching the heater core, and dirty coolant may be a sign of a clogged cooling system. the temp goes to 195 but the heat doesnt get hot any ideas? Feel both the hoses going to the heater core when the engine is hot. Pulled Heater/A. Jump to Latest 98 xj with rc 6. Look for anything by Cruiser54 for more ideas for how to maintain your Renix Jeep. Pop the radiator cap off and take a look at the condition of the coolant, if its brown or has particles floating in it, then its likely that a plugged heater core is the culprit. Got the heater core flushed & thermostat, gasket + housing replaced. I've had three water pumps replaced. 6. Thanx to the you tube guy! Jeep On! No heat, no A/C and been fine. I just put in a new OEM thermostat as a preventative measure and with this heat (118 today) it is running hot. 0L engine (sales code = ERH) SYMPTOM/CONDITION: Customers may describe a 20 to 30 second rough idle following the restart of a heat soaked engine. I have a 1996 Jeep Cherokee Sport 4. 0 4x4 2inch lift 30x9. There is NO HEATER CONTROL VALVE on a 97+ XJ. Jeep Cherokee Heater Not Working: How to Fix. If there's no heat on either line, then the valve is not working. I hopped in the Jeep to go to work this morning and the heat was pretty weak again. move OK and air changes to appropriate vent when moved. i replaced the blower motor resistor. Only blows cold air! I have replaced the thermostat and tested the actuator to ensure its opening and closing. #perfectiming for an XJ heat not blowing problem to kick in. So the hose on your thermostat right next to the temperature sensor goes to the bottom of the heater core, and a hose from the top of the heater core back to the front of the motor gets reconnected just to the left of the thermostat I also have been having issues with my heat as well, I have a 98 4. I am fairly mechanically inclined, and feel I do myself an injustice when I start replacing parts in a guess-and-check fashion. (I'm in central TX, BTW, so it is HOT here. The temperature got up to around 220 (normally around 210) but the heat was weaker than ever. The heater hoses were warm, but not really hot which is why I A year ago I bought a Jeep. Related Jeep Cherokee (XJ) Jeep Cherokee Jeep Cherokee Jeep My 2000 XJ had heat issues even after a new cylinder head. the heater core is getting the coolant into it. 0L H. ) However, the XJ is giving me a little concern. Yep, every Jeep XJ Cherokee owner has to face it sooner or later, your on your way Low heat can be caused by a lazy thermostat, a clogged heater core, a failing air blend door, or a water pump with a poor flow rate. using a non-contact thermometer,the in and out temp of the heater hoses should not be more than 10 degrees. 0 with 189,000 miles on the clock (more likely 200,000 due to large tires causing mileage to read lower by around 6%). What else could be wrong? Friday, March 28th, 2008 AT 7:44 PM. -----TSB 1803103 - 4. The injectors are not leaking down either, tested that as well. then there won’t be enough pressure in the system and the coolant won’t SOURCE: Heater blows cold air when idle Sounds like you may have a partially plugged heater core. It sucks having it like that with the California heat. What are the likely steps to find the fix? Is the heater core next? Relays? Heat only blows hot on high. After your hose un-freezes, flush the heater core and see what happens. 2 -93 Chevrolet Silverado 2500 6. Recently replaced the heater core, ac core, blower assembly, blower motor resistor, and ac drier/cleaner. With the half doors on and the top down, I feel pretty hot air on my legs. If it doesnt, there is the most likely problem. 180* is NOT hot enough to thin your oil to where it should be. Full Forum Listing. 5 in lift, re hack an tap sye, homemade steering box plates, durango steering box, v8 zj tie rod, soft 8s, 37in mtrs. Do you lose coolant. Thread starter KaiserMan; Start date Feb 19, 2009; K. I half-assed flushed the heater core with only compressed air because I don’t have access to a hose right now, and the difference was night and day. 2000 Black XJ Sport w/ Cragars 4" BS, 30x9. Making sure the coolant system is up to specs. Whenever the weather and the engine is hot, and planning on a short 5-20 minute stop, push the timer button before leaving the Jeep. Air temp doesn't change if he moves from cold to hot. A few weeks ago the heat went out. Here you go. the hot water hose is hot, the fuse is good. What am i missing . Heat soak is a hot starting issue, and not a running or stalling issue. the blower motor works. My Gen Rite louvers help get the heat out a bit faster since it gives the hot air a shorter place to exit. Banks Header, High Flow Cat, Flowmaster Muffler, OME Lift (3") with The purpose of this mod is to address the heat soak issue that is common in Jeep XJ’s with the 4. 99 Jeep Wrangler warm heat, not hot. It's a 5spd XJ, carpet removed with the stock moulded vinyl mat in it's place (no more heat after that and it was installed months ago), I've Gauge is overheating and my heater is not blowing out hot air only cool air when the heater is on. Have someone operate the control lever inside from cold to hot etc. Flushing the heater core a few make sure your backflushing it as well, flush it out both ways, make sure the vacuum valve is working correctly if the truck has one. 5x15 Dana 44 Activating the blower to these vents by re-connecting this hose Doing a repair or project?? Want to be part of a Friend's Edition Episode? Interested Subscribers should contact Rob at RM@Axlesgarage. A forum community dedicated to all jeep owners and enthusiasts. If those pressures held there is a good chance you do not have a leak. But you might look elsewhere for your rough idle problem. Helps a little for a mild case. a 195°f thermostat. 5. My question is, does anybody else have this Check that hot coolant is actually making it past your Heater Control Valve, into the heater core and also if the vacuum hose that connects to the top of that valve is loose or missing or if it has vacuum at all when switching to heat. You know the drilldrive it awhile, shut it off, start it back up and it stumbles/idles rough for a bit. I had a similar problem and it was a stat not opening up all the way. 0 -89 Jeep Cherokee XJ 4. Immediately opened up the hood and the hose was hot but not firm. When I switch the control from hot to cold, it certainly gets cold. '98 Jeep XJ - My coworkers not even a Jeep guy and I have yet to go back and say "you were right", I can only imagine the beer he'll think he's owed! My 93 XJ has a heater valve that I believe does not let the water to go thru the heater unless you turn the heat on (moves a flap with vacuum hose). Now the temp *00' XJ_T-n-T Y-Link/6" RE_OME's_33" KM2's Tera 4:1 / 4:56's_Elec. The heater works by using the warm engine coolant from your radiator as a heat source for warming up and circulating air through the Jeep’s cabin so if you’re not there will be nothing coming out of those vents! You should get this fixed ASAP because Heat not very hot on driver's side. I'm looking to buy a 98 Jeep Cherokee 4. How do you diagnose if it is a PCM The heating system in Cherokee uses hot coolant or antifreeze from the engine block to heat the interior of the vehicle. When I rev it up it comes down I also turn the heat on. It gets so hot that with the windows down, it feels like I have the heater on full blast. Both heater core hoses seem hot. AC/Heat question. Not sure if that has Thanks for your suggestions, I will keep searching. 0L Cold starts no problem, but when left for 5-10 minutes after its been driving it won't even turn over, dead as a doornail. Retired now but was a Designer at Jeep and Truck Engineering for quite a few years, though I never worked the Jeep side, strictly Ram Truck. I disconnected the two heater hoses and shoved the garden hose in the radiator cap opening. eliminate all those worries with this kit 88 jeep yj heater not working at all Hey, I have a 1988 Jeep wrangler yj. will try jump direct like you suggest 2000 XJ - aux elect fan, the selection of AC will not turn fan on. Top up the coolant. Apr 12, 2006 #1 If that valve is broken or the vacuum line disconnected the valve would not direct hot coolant to the heater core. Knobs on heater/A. he's also tested the blend door while he had the motor off to Jeep Cherokee XJ (1984 - 2001) OEM Tech Discussion. This happens when the weather is warmer and sometimes during the winter. OEM Stats are Checked the heater valve. This condition may be most noticeable when the engine is This jeep is a 88' Pioneer, has 265,000 miles and runs strong but hot around the 205 deg range which seems normal but it over heats when hot outside and/or going over steep hills. Well this winter my heater core finally started leaking so this past w/e (temp in the 50's on Sat) I replaced the heater core and AC evaporator. both the pipes appear to be hot, so theres hot coolant coming in and out of the core. 5L. If the engine is I replaced the spark plugs, I replaced the coil pack rail, I replaced the fuel injectors, I replaced the fuel pump, I wrapped the injectors and fuel rail in heat resistant tape, I put a heat shield on the intake manifold, I replaced the entire exhaust system on a 2001 California edition (3 catalytic converters, muffler, etc. 1999 Jeep XJ : 5" lift, TnT y-link radius arms and belly pan, Rugged Ridge sye, TnT body StiffinerZ. Flushed cooling system AND heater core. One co-worker has tried wrapping #3 injector with heat wrap but the problem still persists. 78 International Terra SV345, T19W, D300, D44, HO52 My 1991 XJ has no heat either. 0 motor! (The hood spacers for XJ only) Square tubing dime The heat stopped blowing hot in my 2013 JKU. The return is not as hot as the in hose, but it is still pretty warm. Browse Categories Answer Questions . XJ running hot? Jump to Latest You rough idle may not be an over heating problem. XJ Cherokee Technical Forum Then 7 miles home. That technique though is not completely foolproof for a partially clogged core. The blend door/s are cable operated. If the little tubes in the radiator are clogged, it will not cool At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. I have flushed the cooling system, it has what I believe to be a 190-195 degree thermostat in it. Both heater core gets warm. I call her Rigby. 0), provided he used a T-Stat with a bleed valve/hole/V-notch in his T-Start. You can check it in hot, boiling water and see operation but sometimes easier to replace, depends on your curiosity. You could need a tcase fluid change if the The problem is that my 1998 XJ with 107K miles is difficult to start up when the engine is hot. Sealed cabin and climate control on, too hot at any temp. Luke warm. The A/C works fine. My Jeep Dose Not Put Out Any Heat. I've a 96, XJ TD which was working well and then the next day the heater had gone, it blew cold air, now as the temp outside is winter degrees its a bit noticably cold inside what was a warm jeep when the temp outside is closer to 12 deg C the heater is noticed to be warm, but when colder its warm but not a great heat. both in and out of the Jeep 2 thermostats heater core flush blend door Generally, it starts off uniformly super hot, but then cools down and only keeps certain spots hot, but that is only the case in 35°F or below, wind blowing, no heat. And the electric fan never comes on unless I run the AC Had this xj for 6 years and never had a temp guage until now. I never thought adding hood louvers could make such a difference in the performance of my Jeep XJ until I installed the I beleive the no heat is the heater hoses are clogged (I confirmed that myself). I've had the radiator replaced. No leaks with heater core. 161 posts My heat was weak when I bought my Jeep and that alone made the temp Ok, Ive tried a few thing to fix my heat in my 98 xj sport. [/QUOTE My jeep dose not get too hot sitting idling but after going down the road its ok a little load on the engine warmed it up Hot positive battery cable on 2010 Jeep Wrangler I would like to know more about the Jeep that had the hot battery cable end. 0 a/c blows hot air not warm, hot like the heater will not disengage. If you drive in hot ambient temps up long hills or towing stuff you might overheat an XJ. i have gone through most if not all of the steps i can think of to try and fix it. The trans/tcase sit up pretty close and when they get hot it transfers heat. X. Is the heater core next to replace?:cheers2: (2000 XJ 4. Once running, everything's normal. Here are some things you can do on your own to fix your Jeep Cherokee heater’s problem. . due to failure: robertshaw 180 stat, hesco highflow housing, new water pump from orielly (factory replacement), hoses, heater valve, belt, fan clutch (xj standard I removed the heater core tube's from the t stat housing (front of the motor). and get a solid 200-210. The A/C compressor was replaced in the summer. The most common reasons include but are. TESTING PROCEDURE 1991 –2001 4. Near the rear of intake manifold, disconnect sensor pigtail harness connector from main wiring harness. Even when my engine is at temp the heat is not HOT, only WARM. I'm almost resigned to doing the heater core or hocking the Jeep for a few hundred bucks. The passenger side blows HOT air. youll know where your coolant flow is stopping. When I turn it to hot, it doesn't get much warmer. AFAIK, Jeep removed the heater valve in 97 so coolant always flows to the heater core. 7L V8) This winter there was basicly no The heat is somewhat warm but not hot. Browse Categories Answer Questions 98 XJ cherokee sport 4. once it all wamred up and running grab the hoses. I will drive around for awhile making maybe two to three stops. Save Share maintenance, and more for the SJ, XJ, KJ, KK, KL series and Grand Cherokee! Show Less . We put standard 195 in. Hi everyone! I just bought my first jeep a couple days ago, so forgive me if this should be common thing I should know about. Thanks for the help in advance-Mike:cheers2: Heat is likely not neccessary in san diego. Still runs hot, over heated once since. Eventually the warm / cool knob made no difference at all. 5 hours work, and a bit of cash. I let the Jeep sit over the weekend because I had to drive my other car up to my parent's farm to put it in winter storage. Normally temp gauge reads slightly to the left of 210 deg. It is quite uncomfortable, especially in the winter when the Jeep Wrangler's heater core sends cold air instead of hot air into the cabin. Thread starter blaker_99; Start date Oct 15, 2009; B. after installing a new core i Hey there, NAXJA - Long time reader, first time poster. When the jeep is hot (running for a while), turn off the jeep. I stroked my XJ engine so that it had 250 or so horsepower. if I’m driving it’s fine if I get back to an idle the temp goes back down and air gets colder. These videos are intended for gen Heater Treater Blend Door Repair. I then ran high pressure water through the tube, in the correct flow pattern, and the water trickled out of the other hose. The problem is that the engine gets very hot when it bakes under the hood, which makes the fuel in the injector (typically the #3) pretty hot also. Both lines to and from heater are hot - so heater core should be OK. when I purchased it, the water pump and a few other things were out so I have no idea if heat worked My 98 Jeep Cherokee is only blowing cold air. Jeep Cherokee XJ 4. :devil: The deal is, I've flushed, reverse-flushed, chemically flushed, etc the heater core about four times. A forum So I just got done replacing the heater core in my Jeep and im still not getting any heat. For those that aren’t familiar with the heat soak issue, it occurs on hot days when you’ve driven long enough for the engine to be at full operating temperature. Air just blows warm and not hot. I have a 96 cherokee with 4. Ended up taking off the two lines at the therm and water pump and backflushing and straight flushing the core about ten times, as well as taking a light dose of compressed air to flush as much out as possible. Janice’s Jeep Chreokee has had trouble regulating the temperature in the cabin. Hot spots are hot enough to make thin driving gloves between 25-35°F almost a requirement. Heat not hot. Know that overheats are extremely hard on your engine, especially the cylinder head. If you can do the work yourself, the parts are really not that expensive. Your dash gauge may or may not be correct. Engine not reaching proper temp/no heat?? Thread starter Tynamite 87; Start date Jan 30, 2010; 1; 2; Next. i replaced the blend door motor, that did nothing. MASTERTECHTIM MECHANIC; 4,750 POSTS; Sounds like a bad head gasket. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb Two of my co-workers have late model XJ's (00', 01') with the same symptoms and they are also getting the #3 missfire code. ECOTRIC Aluminum Louver Hood Vent Compatible with 1984-2001 Jeep XJ Cherokee- 1986-1992 Jeep Comanche Cooling Panels Pair Kit Bolt On 1) “I recently installed the ECOTRIC Aluminum Louver Hood Vent on my Jeep XJ Cherokee and let me tell you, it’s a game changer! Jeep XJs have a history of running hot and overheating (aka heat soak) and the Sandbox is no exception. On my previous 95 cherokee it was like a sauna 24/7 unless the blender was on the middle of hot/cold. In the TJ the heater core is always in the "coolant loop" meaning that if coolant is flowing then it is flowing through the heater core. A forum community I recently purchased my 97 Jeep Cherokee XJ and have noticed several issues regarding the heater: it takes about 10 minutes or more for the heat to get hot, though the blower works quite well. 1998 Jeep Cherokee; Jeep Cherokee Car and Truck; Jeep Car and Truck; Cars & Trucks 1998 Jeep XJ, has no injector pulse. Jeep came up with a TSB and a lame fix of wrapping the #3 fuel injector, but it doesn't truly fix the problem for most. Could be a vacuum system leak that takes a little time to drain. 0, air conditioning works, but it will not blow heat when switched from cold to heat, defrost blows at windshield, but is cold air, the heat option blows nothing out at all, everything else will blow only cold air, jeep is drivable and does not run hot, could it still be Heater core if it is not running hot? I have a 2000 xj 4. any more and the flow is restricted so coolant spends too much time in core and cools off. The 2 foot lengths of hose, gives you enough to route the flushing output down out of the bottom of I've removed my heater control valve and the heat is NOT always on. But when hot, the engine will turn over, but it takes about 5-10 seconds to get it running. The gauge on the 91' XJ is right I checked it with a heat gun and inline thermometer, we run the AC on it allot and often take it over the hills to Santa Cruz, SAC, Tahoe, etc so it tends to run For #1, you need to resolve the issue whether it is thermostat, etc. 20 minutes and some nasty guke later. I have been experiencing "lukewarm" heat for a few winters now and had tried fushing the heater core with little improvement that only lasts for a short while. My Jeep: 1998 XJ 4. this is only when hot. According to the seller he thinks it has something to do with the switch inside the dash that tells the car to blow hot air, and is dropping the price accordingly. Unplugged the vacuum line from the valve and the arm drops down, when I replace the vac line it goes back up. Gets warmer when stepping on the gas, but - Jeep 1999 Cherokee question. My Cherokee has been running hot lately. A radiator can cause this also as the engine produces much more heat at expressway speeds. The top of the main fan shroud is broken It seemed to be the highest point in the system and a great place for air to block the coolant from entering the heater hose. Not being a jeep guy, I'm just guessing. Lots of thick rusty water came out of heater core, which would not flow water at all prior to flushing. 4. Is always a good idea. Yes, coolant is always flowing through the heater core, but if the fan is off, you're not gonna feel the heat. 0L ROUGH ENGINE IDLE AFTER RESTART FOLLOWING A I'm getting what I beleive is heat soak on my 2001 xj. It was horrid. Most The XJ factory cooling system is barely adequate in hot ambients. my dash temp gauge gets a little bit above 180, but not to 210 at all. Even the lowest fan setting will sweat you out of the Jeep, even with the soft top. 1. This means less time for your sensors to heat soak prolonging their life. Coolant is good. 1999 Jeep Cherokee XJ. You most likely do not. Also not worried about heat, It just lead me to the issue with engine temp, and the gauge on the dash is working. 50 Kumho Road Venture AT KL78 Tires, 3" RC Lift, RC Check the vacuum valve on the heater valve line. Fins or louvers that are jammed shut or stuck in the closed if the engine gets to operating temp(190-210) and heater valve opens allowing coolant in to the heater core and there is luke warm heat, feel the heat core return hose to see My '88 XJ didn't have decent heat until I flushed the heater core. If one is hotter you may have a clogged Plus, they provide over 66 sq inches of heat exhaust – perfect for those hot summer days on the trails. I remembered the previous experience of pulling the HVAC box to replace the heater core. there can be numerous reasons why 02 tj heat not hot. It runs around 210, which makes me nervous. i replaced the water pump. Heater valve/vacuum question-almost no heat. Only an idiot light before. It had been running steady at 210 to 220. since at speed the air is forced through the radiator making it hotter, not that the jeep will know the difference since there's no IAT sensor, you'd have to rely on the o2 sensor to make fuel trim adjustments The corner venting just creams off any If Jeepers are experiencing Jeep Heater Not Working, it could be due to them having no coolant in their system. 0 liter inline 6 engine and this heat soak issue is especially pronounced in the 2000-2001 XJ’s. Lately my XJ has been getting really hot around the center console/transmission tunnel area. Last one I owned I replaced the radiator with a three core aftermarket and replaced the thermostat. Oct 15, 2009 #1 After doing a bit of research on heater problems i decided to give the two hoses going into my heater core a touch to see if they were both the same temperature. Coolant level seemed normal (dirty but ok level). Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Guess I could pick up a replacment t-stat, flush the core and put a new valve in all at the same I have a 2000 4 cylinder TJ and the heater is not hot at all. If one is hot and the other not so much, that is proof of a heater core problem. engines 1. Conclusion: Heat Not Working Jeep Cherokee. 88 gears, no slip in the rear, electrical problems ect. is there another sensor that is potentially the reason? Many thanks for any advice . For #2, if you are at 200-210 and still not getting heat, the most likely suspect is a partially clogged heater core, but you should also verify blend door operation. There is a code or 2 related to elec fan that may NOT show up with key on off trick. We have 2000 jeep and temp gauge didn't go up as high as it should. The engine temp stays around 170 to 180 sometime bouncing to 200 then back down. 1 of 2 Go to page it will not work and will not let hot water into the heater core. controls (below radio) and checked lines behind it -- nothing disconnected. Sometimes if I crank it long enough I will get a no BUS message. Either the door is stuck or jammed. HMAC300 MECHANIC; 48,601 POSTS; Check to see if both heater hoses are hot first if not then the heater core can be flushed or back flushed. See if they are both hot or if one is allot hotter than the other. I haven’t had good heat since I bought the thing. i replaced the thermostat. Go under the hood and spin the clutch fan by hand, if it moving freely (no resistance) then you have a bad clutch fan. AZ-Jeff I second flushing the heater core. So we changed thermostat. Jeep Liberty heater not working - causes and diagnosis; READ The HCV allows flow thru the bypass loop (even when the heater is not being used), likewise eliminating the HCV also allows flow thru the bypass loop (and heater core), as cruiser stated. JEEP XJ HEATER - NO HEAT FIX - IT'S PROBABLY NOT THE HEATER CORE. I've Had The The only preparation that needs to be done, is to install the female hose couplings on their respective pieces of heater hose, and park your Jeep where the flushing won't make a mess (preferably not on the grass, antifreeze is a great de-foliant and will kill your lawn). He is the man My jeep dose not put out any heat. I then ran the high pressure in the reverse flow pattern and a huge amount of green / brown sludge came out of the other tube / heater core. Elimination of the fuel return line from the fuel rail--97. 0L , 5-Speed. No CEL at first. Any ideas on what it could be or i could do?:tea: TJ Wrangler Technical Forum General Discussion YJ Wrangler Technical Forum XJ Cherokee Technical Forum Jeep First, point a laser thermometer directly at your thermostat housing with engine HOT. Any ideas. It is 20 degrees out but shouldnt that hose still have been firm after that long drive? level is still good and there is nothing on the concrete as far as leaks. We have ruled out the ignition system as a possibility in both cases. After reinstalling everything my heat is now blowing room temperature. That coolant has probably never been changed. check for vacuum leaks (the vacuum lines) or Also if it is a 96-older model your heater control valve may not be opening properly, this is normally caused by a vacuum issue. Turn on vent for outside air and it blows cooler. Come join the discussion about performance, engine swaps, modifications, Xjs are prone to vapor lock which effects warm starts, you can get a heat shield to put around the fuel rail to help alleviate the issues I guess those fail sometimes once the engine is hot or whatever. I feel like the floorboard area is hotter than normal. In this video we install a fan override switch from K Hood vents helped a lot but the fix that cured the hot soak problem for the past four years was to install a timer that runs the aux electric for 2-3 minutes after shut down. 1998 jeep xj classic, I need to know the next steps in fixing my heater, I flushed the heater core a while back and that helped for a little bit but now it feels like it’s back to normal. If you search "heat soak" or "rough idle after hot start" you will see many having the same issue. Yeah, in the middle of January. Save Share Reply Quote Like. for example a heater core that doesnt put much heat at idle had 45 degree difference between in and out heater hoses. Parked while flushing to relieve any air bubble that might be caught. temp is always 210 and getting nice heat. I just bought it back in April so I havent had to use the heat. I've tried the cardboard over the radiator trickit seems to help a little. Again, not good. I've seen an old Kawasaki four wheeler do the same thing until we replaced the neutral position sensor. C. During the heat of summer, the TJ had never given me any cooling concerns, with the temp gauge staying just below 210 unless I'm sitting in traffic with the A/C on, and then it will only go a little over the 210 mark. ” The blower is running fine, and when I first switch from cold to heat it will be warm for about 5-10 seconds. Start with a basic cooling system service. F on uphill climbs and out Jeep Cherokee & Comanche Forums. But now i want to fix it, i get heat in it when the jeeps up to running temp, defrosters, etc but it only blows out on high. It was cold all the time. F on open road and slightly to the right of 210 deg. So I’ve done all that and now my ‘XJ heat not blowing’ problem is a ‘XJ heat NOT hot’ problem . ac is charged lines and canister are cold. So I flushed my raditior and then flushed my heater core (hooked hose up to the top heatercore line and let the h2o exit from the lower heater core hose while disconnected from the block). Jeep Cherokee Modified 1984-2001 Jeep Cherokee XJ; 2008-2012 Jeep Liberty KK; 2002-2007 Jeep Liberty KJ; 2015-2019 Jeep Renegade BU; 2007-2017 Jeep Patriot MK74; a little background on how that Jeep heater works because hot air has to come from somewhere, right? And it comes, basically, from heat generated by the engine. Have the wife start up the jeep and turn the heater on, and watch that valve, it should open and close. And at idle it sits at 210 - 215° F. Top Contributors this Month View All. She’s a 1994 Cherokee Sport (XJ) and my build thread starts here. Went back and re-read the original post--your pards with the 00 and 01 most likely have heat soak. The real advantage to them, IMHO is that when you stop the heat is not trapped under the hood. It can be tough to find why your Cherokee’s heater is blowing cold. The thermostat has been replaced several times. When I pulled the heater hoses, nearly black coolant came pouring out. Im thinkin maybe the actual control is off track and I can't slide all the way to the hot end? I know this is an XJ subreddit but this post showed as recommended on my page and I may have something to add. Click to expand You are correct. 0L heat soak. . My Jeep now only throws minimal heat and takes forever to warm up. So my buddy has a 2000 XJ 4. Save Share 2000 Jeep XJ - Chopped / Locked 1997 Jeep XJ - Daily Driver 2003 Now my heater won't get hot enough to remove goosebumps on my arms. 49 psi is the correct fuel pressure with the 1996-2001 4. The thermostat controls flow only It will be hot here for the next few months so I shouldn't have to worry about rolling without heat. · Joined 2015 Add to quote; Only show this user #1 · Oct 24, 2016. Watch for full travel and that it HOLDS position. Zip tie it open see if it gets warm. bit confused what would be the cause after the heat sink happening. There are several reasons why the Jeep Wrangler heater is not working. I googled and saw a guy do a reverse heater core flush. Very common. Explore Our Forums. Someone suggested flushing it first. Yea I am pretty sure the 98 does not have the heater valve. 0. The heat never gets really hot and it also does not work well for the floor heater. Both are working as expected. Use a 195 if the rest of your cooling system is working properly it will run perfect. Location Colorado Springs, CO. It feels like the heat is on regardless of any setting, meaning it blows hot when it is cold outside just the fan on with the selector switch not on A/C and the temperature knob on max cold. The heater core has constant flow, hot or cold. How to replace the heater valve on the 1996 Jeep Cherokee XJI am not a mechanic, but I do enjoy working on my own vehicles. That was a job I do not care to Jeep Cherokee XJ (1984 - 2001) OEM Tech Discussion . Come join the discussion about performance, engine swaps, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . Cab heat is simply a byproduct of solid engine heat. So ive owned this jeep for a little over a year and dealt with the poor heat for a while. When you turn on the heating, air gets blown through the heater core, warming the air in the cabin. If you feel heat through both then there is somethng wrong with the baffles/doors in the HVAC that's not allowing the air to be ran through the core. In the last few days it has been red lining once in a while. I am a service tech with one in my bay that is 190F on the positive cable terminal end and 120F on the negative. Did not get hot on hills etc when not towing. If your coolant temperature is hot enough, your problem is most likely that your heater core is still partially clogged. After around 10 minutes of driving, the the driver side blows just air, not warm at all. We all know XJ's and any other 4. and I started up the Jeep for 25 minutes before I went out to drive it. The air would cause it to run hot, not cold. Go to start the jeep again and the engine cranks over but wont start. 3. the jeep warms up fine, it does not over heat, runs at perfect operating temp right up at 210 it has a 190 thermostat in it TJ Wrangler Technical Forum General Discussion YJ Wrangler Technical Forum XJ Cherokee Technical Forum Jeep CJ Forum. If your tech did the pressure test correctly the heater core would have been exposed to the pressures applied by the test. In this video I go over 3 of the main reasons why you might not have heat, or just luke warm heat, in your Jeep Wrangler TJ's. Finally getting the missus to join me on cruises so I've been trying to accommodate and added JeepAir for AC and heat. I had him feel the heater core hoses when the engine is hot and running and there is no temperature difference between the hoses. I am betting the heater core is plugged up on the OP's "target vehicle". Any steam coming out of her. r/startrek. no T-Stat at all can cause serious over heating since the water flows soo much faster it never has time to transfer the heat away. No heat comes out though. Warm heat not hot plzzzz help no over heating . 1999 jeep cherokee sport heater problem. 5TD -94 Cooler is NOT always better. Check your hoses at the firewall going into the heater core. Technically heat soak is the increase in heat in objects when the cooling system is shut down or diminished such as when you turn it off or come to a stop and the water pump is not turning as fast as it was. I replaced the thermostat. Yes this is a common issue with this jeep, however my jeep has 270,000km on it and I have not had problems with this all summer through the hotter weather when I was driving highway kms almost 120km a day; I do currently have some sort of intake heat shield although it is an insulated material it should be helping- it is now the fall and I have been driving a lot 96 Cherokee sport 4. It would actually get hot enough to cook you out of the Jeep. If they are not hot, then you probably have a clog somewhere or a thermostat issue. with the heater off and the valve allowing flow both hoses should I acquired a 98 XJ a couple months ago. I don't drive it often so I'm not sure if it is related to the new thermostat or not, it was getting a bit warm before but I haven't driven it in this kind of heat lately. I notice that since I put them in that when I get back in the Jeep the temp is lower at startup This is a known problem with the 2000-2001 XJs that have the coil pack ignition. Contributing factors to heat soak: 1. Thanks! ckl5150 (2015 JKUR , 2000 XJ, 2000 TJ) Save Share Reply Quote Like. This happened around a week or so after using the heat on full power during a ~200 mile doorless/topless road trip in ~40 degree weather. i replaced the radiator cap. I just had the cooling system and heater core flushed in my 2001 TJ and instantly went from no heat at all to my heat blowing 135 degrees out of my dash. I was looking at the engine and noticed that one of my heater core lines were hot and the lower was cold. It runs about 170-180 and the heat will run you out. Locked D44 Only show this user #3 · Feb 22, 2010. The money spent on your cooling system is absolutely the BEST money you can ever spend on your XJ. I know I know There are a million "XJ overheating" threads but I'm really at a loss here even after reading every forum I could find I have a 1991 4. Same time I had a cold. As for the overheat I am unsure? The top radiator hose gets hot and the lower stays cool. Jeep Cherokee XJ (1984 - 2001) OEM Tech Discussion . You could flush this out separately, from flushing radiator & engine block. If this happens only when HOT and not when you start the engine cold, it really does sound like "heat soak". Like there is a little bit of heat building up in the heater core but then it is quickly depleted. 0L XJ engine running. 0 -90 (partsjeep) Jeep Grand Cherokee 5. I have a 98 TJ 2. I thought I had a bad heater core. Does your inside heater blow hot or cold? Reply reply (XJ) Jeep Cherokee Jeep Cherokee Jeep American Motors Corporation Chrysler Cars and Motor Vehicles forward back. 0 Litre with 115K miles AW4 Automatic Transmission NP231 Transfer Case On my way to Tahoe my rig began to overheat on an uphill climb. Socket forever stuck inside unibody Even in winter the e-fan will Jeep TJ heat is not hot. Being a 1998 there is no heater core control valve probably the hvac flap, (or whatever it's called) which is vacuum actuated, or the "blend door" letting in only air from outside. TJ Wrangler Technical Forum General Discussion YJ Wrangler My 2000 Jeep Cherokee barely has any heat and after trying a new thermostat, and flushing the old heater core without success it was time to pull the dash ou My A/C is blowing hot air. Even with the doors off, I can't believe how well it cools but as the engine gets hot, it's performance starts to suffer with heat from the firewall and floor. If the hoses are hot then check to see if you have a water vale inline with the If they are both hot and you have no heat still, you could have a blend door issue inside the cab. all positions on selector Do not run hot when driving 75+ on highway in 70+ degree weather at night. Both hoses are hot from the engine and cold 1/2 way to the heater core. 0 will only get warm. when the heat dial is halfway between full hot and full cold, the "blend door" is somewhere in the middle, letting in air from outside as well as heat from the heater to blend the air and make it "warm". Today I did just that. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" Hot heater hoses, but low temp gauge reading and very lukewarm heat. 1988 Cherokee Laredo, Auto, 2wd, "Grey Ghost" TJ We show you some ways to combat heat soak in a jeep XJ! These tips could work on any jeep with a 4. The fan speed switch works, the I've been suffering all winter in sub-zero temps with positively no heat. XJ Jeepin Girl A Jeep Cherokee heater valve is a device that regulates the flow of hot engine coolant to the heater core. Redesign of the manifolds to regain HP lost to new emissions requirements--99. Blower fan fine, but cold air. Your oil needs to get hot to thin out. Closed or clogged vents can make you feel like your heater is not producing enough heat, as some of the hot air cannot pass through the vents into your Jeep’s cabin. (Spliced into the heater "inlet" hose) Brand New everything else incl. Also heater isn't blowing hot air. The heater valve is controlled by a knob on the dash that the driver uses to regulate the amount of heat in the cabin. Watch the heater control valve for the vacuum motor function. That's BS. I changed the thermostat and the coolant. i had the jeep at The heater in my 1999 Cherokee Sport does not blow what I would even come close to considering hot air, sometimes it is warm, other times it is cool. is not turning over. Not cheap). The heater hoses under the hood get hot to the touch, but it just doesn't transfer over to the heater. Don't the later XJ's have that? So last week after a hot climb and just after I the heat in my 2000 cherokee sport with the 4. If not then fix The Jeep Cherokee heating system circulates hot coolant from the engine through the heater core. I noticed my XJ runs a little cooler especially during the summer months and i get less heat soak in the summer also. IN fact ran mostly around 208 degrees. I let the jeep get up to operating temp and I know the thermostat is working, but the heater core hoses dont seem to be getting hot enough for me to think that coolant is really circulating through the heater core. TheBoogieman. When the XJ has cooled completely over night, it will start up fine in the morning. This is my first Jeep, and my Jeep knowledge is limited 2000-2001 (XJ) Jeep Cherokee (Domestic and International Markets) NOTE: This bulletin applies to vehicles equipped with a 4. 0, AX-15, XJ I overheat while idling, but here's the catch Everything is new on that car! Motor has 3k miles on it, entire cooling system is new, has new fan clutch out of a ZJ, runs 98 XJ cherokee sport 4. When you do something to use that horsepower the stock cooling system does not cut it. Turned on heat and hot air blows out. Could this be an electrical problem, a fuse or something? if yes, how do I locate this fuse. 0 and I'm out of ideas as to his heater issue. It's on a bypass circuit. Search Fixya. 1988 Jeep Cherokee 4. My heat was so hot on low I had to roll down my windows. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. It has flow. 0 2x4 with 147k on the clock. Jeep wrangler no heat problemHeat not working in jeep Heat not working in jeep cherokeeIntroducir That behavior of the heater indicates that it is not functioning properly. If there is no heat on either line at the heater core, grab the hose On a cold day, perhaps 15 F, it takes my jeep a good 10 minutes to reach operating temperature and another 5-10 minutes to get "warm" air blowing through the vents. engine cold and off - spin fan it should not free wheel and @ 5 turns max. he's checked the blend door motor and it works. Last night I replaced the thermostat and even put a winterfront on the jeep, made zero difference. if you have the fan off and one hose is cool still youve got a bloackage. I also had an XJ that after I flushed the cooling system the heat didn't want to work to good. Thermo was good. 0L that I am having problems with it running hot (215-225) at high speeds (75-80mph) on the freeway and will over heat into the red line at idle in the drivethru or trail. 43740 posts TJ Wrangler Technical Forum General Discussion YJ Wrangler Technical Forum XJ Cherokee i have a 2000 xj, and it has no heat. O. '95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb 1998 Cherokee Sport 4. Common reasons a jeep has no heat and how to fix – atvhelperTroubleshooting jeep wrangler heater: tips & fixes No heat in jeepWhy is my jeep wrangler heater not working properly? fixed!. Sort by Oldest first Oldest first Newest first Most reactions. Jump to Latest yes sorry forgot to add that information in there. I asked the guy who did my flush and he said he never tried but was willing to try for me. Wait a while in each position. Location kelowna. 3 Replies. I thought maybe a bad thermostat so i got another, I used to have the hottest heater I ever owned. So I'm freaking out thinking it's too hot! I know these motors tend to . 195-210 farenheit is the range for your target of your coolant temperature. If you do want to retain the HCV, one hose is 5/8" and the other is 11/16". When the knob is turned to the “hot” position, a cable connected to the knob opens the valve, allowing hot coolant to flow to the heater core. However, the control valve for the hot water in Introducir 95+ imagen jeep wrangler heat not blowing hot. ac is charged lines - Jeep 1998 Cherokee question. 178857. Heat problem from heater. It goes out or in depending on hot selected or cold. The ECT needs to reach 223 deg F or the AC high side exceeds @300psi to command fan on. What would be the reason that one side works great but one side's vents just blow air and not hot air. The temperature slider is very tight and will only slide 3/4 of the way to the left (cold side). If so, heater core is good, saved yourself 7. 2000 xj heater not blowing hot. I changed the thermostat to a 180 yesterday. Add to quote; Only show this user #1 · Nov 25, 2012. It would blow lukewarm air no matter what. XJ Jeepin Girl NAXJA Forum User. I had to replace the water pump 1 1/2 years ago and I ended up changing the thermostat as well. R Robinson . 2. Thread starter XJ Jeepin Girl; Start date Apr 12, 2006; X. position sensor as that seemed an easy place Sounds like no problem heating 😀 the XJ's are notorious for cooling system issues. The hot coolant is pumped through the heater core located behind the dashboard. After looking people talked about T-stat needing replacing (mines new), Flushing & topping off coolant system (done), and a bad water pump (brand new with metal prop not plastic). com Absolutely NO-E 96 XJ 4. not being able to control the heat/cold airflow maybe the Blend-Air Its not cold but its not hot hot. I just replaced the stater on the jeep then went to use the heater and it didnt work. the engine heats up to just under 210, which is in the range, but seems to be a few degrees colder than it used to (4. The hoses are hot. blaker_99 NAXJA Forum User. kty clcs edp qvuqv ixx iatoq zim lotx pfujt glvh