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Jeep Cherokee Sport HELP!

6 messages,  Last post on Sep 07, 2009 at 7:58 AM

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What is this discussion about? Jeep Cherokee, Engine, SUV

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#1 of 6 2001 Jeep Cherokee Sport HELP!!! by jayjay813 Mar 28, 2009 (12:26 am)
Where do i begin? i have a 2001 Jeep Cherokee Sport w/ 4.0L 6-cyl automatic, 110,000 miles... I recently had some issues with it overheating due to bad water pump, which blew my head gasket. I had all that fixed, but one problem that started when it was overheating was my oil pressure gauge started reading zero when the engine got hot, but would go back up when i gas it. Even after cooling issues were fixed, gauge problem continues. i'm not leaking or burning any oil that i am aware of, gauge just reads zero when engine is warm and idling.   Also, my check engine light is constantly on. error codes are for "evaporative emissions system leak (large)", and occasionally "cylinder 3 misfire". i have had numerous hoses replaced, and replaced my gas cap, but problem persists. also had plugs and o2 sensor replaced at 100,000 miles.   AND (oh yes, theres more!) sometimes when i start it it runs really rough. it will idle low and act like its gonna stall, but doesnt. if i try to drive through it, it continues running very rough until i stop and turn it off and back on. usually then, (but not always) it runs fine after restart until the next random time it decides to do it again. happens both on cold start and after sitting for only 10 minutes, but only occasionally, only a few times a month.   AND when i start it, theres a knocking sound. nothing too deep or loud, and it usually goes away or is barely audible after warming up. pretty sure its a lifter sticking, but figured id put it on here for a second opinion.   and, FINALLY, this is the least of my concerns, but im wondering if this is a common problem. my a/c quit working in 2004 when the prior owner (a family friend) had it. she had the compressor and condenser replaced and it worked for a while after being charged, but eventually stopped again. someone told me that evaporator cores are known to go bad on cherokees, and im wondering if this is the likely culprit.   Well, thats where im at at the moment. any info or suggestions at all would be greatly appreciated. For some God awful reason im ridiculously attached to my Jeep and am not ready to let it go!   Thanks so much! Replies to this message: daddy28 (Jul 11, 2009 3:22 pm)
#3 of 6 non working a/c by 3rdjeepowner May 16, 2009 (2:28 pm)
Last summer I tried to add refrigerant to my non working a/c, It worked for about a day, then no cool air would come out. My mechanic noticed dye coming out of the drain tube and said he had to pull the dashboard out to fix the evaporator core, a four hour job.   While they were at it, my clutch was going bad. I had to buy the compressor at the same time, because they would not offer a warranty. I also had to buy the dryer, because I was told if it went bad, it would take out the new compressor.   When he removed to dash to replace the evaporator core, he said the heating core did not look that great so it was replaced also.   It took about $1600.00 to fix the problem. but I have not had any problems by having almost a brand new system in place.   This happened with 120 K miles on the jeep. If anyone is thinking of buying a Cherokee Jeep, it would serve them well to have someone check for leaks in the a/c system, especially the evaporator core. Rog Replies to this message: tidester (May 16, 2009 2:47 pm)
#4 of 6 Re: non working a/c [3rdjeepowner] by tidester HOST May 16, 2009 (2:47 pm)
Replying to: 3rdjeepowner (May 16, 2009 2:28 pm) Thanks for the report. That could save someone a bit of grief down the road.   tidester, host SUVs and Smart Shopper
#5 of 6 Re: 2001 Jeep Cherokee Sport HELP!!! [jayjay813] by daddy28 Jul 11, 2009 (3:22 pm)
Replying to: jayjay813 (Mar 28, 2009 12:26 am) Not sure if you will get this, as this is an older post, but amen brother i hear ya completely.    I have a 2002 Jeep grand cherokee laredo that worked great for about 2 yrs before everything started going to shit, with exception that it vibrates once up to 60 mph that happend from the beginning.     The window regulators blow out on the windows every single yr, so now in summer i never roll my windows down because it costs 240 to 280 a pop to fix.    My Jeep also stutters and stalls like yours does, we'll be at a stop light and it will shake violently and shutter and act like its going to die on us, and sometimes does.     Every summer once june hits, the radiator fan blows out (which is replaced for free because it was a recall) but it blows out my radiator fan relay at the same time which is 340 out of pocket every year lol.     I don't know who to turn to with these issues because most mechanics are just after the buck and since i'm not car savy i can be dupped into paying unneccessary money for bullchit.     If you come up with any answers let me know lol, sorry i know this doesnt help just wanted to let ya know, there's lots of us out there
#6 of 6 Engine revs to full throttle by toetrucker Sep 07, 2009 (7:58 am)
I just replaced the head gasket on my 99 Cherokee. Easy job, no problems but when I started it, the engine revved to full throttle. I double checked everything, it all seems fine but when I start it, it immediately goes to full throttle and stays there. The IAC was old and carboned and had been setting a code prior to the head gasket. I replaced that but no change. It maxes out the engine speed. Any ideas?

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