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Jeep Grand Cherokee A/C Heating Ventilation

372 messages,  Last post on Oct 27, 2009 at 2:04 PM

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What is this discussion about? Jeep Grand Cherokee, Heating / Cooling, SUV

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#41 of 372 Re: 99 jeep cherokee loud squeeling noise [pgjeep] by xjman Sep 12, 2007 (7:03 pm)
Replying to: pgjeep (Jul 25, 2007 2:17 pm) If you haven't figured it out already I have some help for you. Your squeeling is a common problem among any vehicle and there is nothing I hate more than waking up to someone's loud car. First off, determine which part is squeeling. Open the hood one morning while it's making the noise and stick your ear down there; watch out for moving parts. If that doesn't work take a long screwdriver and place it on all the components that are belt driven and feel for vibrations in the handle. Your squeel is due to a dried up bearing and when bearings go bad they can make all kinds of strange noises that can go and come whenever they want. Chances are if it's temperature related and the noise goes away once the vehicle warms up it's probably your water pump. The coolant tends to heat those bearings up well which would make the noise lessen or even go away for awhile. Hope this helps. Don't forget to pick up a Hayne's manual for complete instructions on repair and rebuild.
#42 of 372 How do I change the A/C evaporator on 1995 Loredo V8 by jeepowner55 Aug 25, 2007 (1:31 pm)
#44 of 372 Grand Cherokee evaporator by quadring Sep 30, 2006 (6:29 pm)
Good luck, friend. You have to pull the dash and then pull the whole a/c-heater case, then open up the case to replace the evaporator. This is an easy but time-consuming job for an experienced Jeep dealer technician. You better be good to try this at home. Replies to this message: gwd601 (Oct 23, 2008 9:11 am) tuggajb (Oct 23, 2008 12:26 pm) gwd601 (Oct 24, 2008 6:49 am)
#45 of 372 hissing sounds from evaporator by tst58 Nov 08, 2006 (8:52 pm)
I just had the condensor, heater core, and evaporator replaced in my 2002 Grand cherokee. There is are hissing sound coming from under the passenger side of the dash. It occurs even when the air conditioner is not running. My mechanic said that a new type of equalization valve was part of the new install. Why is the 5 second hiss every 30 seconds repeatedly occuring? Has anyone else had this problem and I am looking for a solution.
#47 of 372 No cold air from vents by navy911 Aug 25, 2007 (1:31 pm)
I own a 1997 laredo grand jeep cherokee. The problem is that no cold air is coming out from the front vents. I get cold air coming only from the floor vents. Has anyone had this problem in their jeep and were you able to fix it.
#48 of 372 2001 Jeep Cherokee AC/Electrical Problem? by wesbuck4 Aug 14, 2007 (4:10 pm)
#49 of 372 2001 Jeep Cherokee AC/Electrical Problem? by wesbuck4 Aug 07, 2007 (3:04 pm)
I have a 2001 Cherokee Sport automatic with 102k miles on it (of course warranty runs out a week before problems begin.) Anyway, my AC was working fine, and all of a sudden, if I would let off of the throttle, the vents would begin to blow uncooled air. Not hot, just not cold. I would have to shut the AC off for about 10 minutes, then turn it on, before cool air would come out, but then if I slowed down, it would blow warm air again. I noticed the AC clutch would engage and disengage fine for about 10 minutes, then would not engage again, until I shut the car off and restarted it.   Along with this problem, if I drive with the AC on, I begin to idle really low, and have stalled at stop lights. So I've been driving without AC to stop the stalling. Now I am beginning to get some idle issues when I sit still or slow down with the AC off, where the engine will rev high, and then so low it stalls.   I have checked all connections, and fuses, and the freon levels are fine. My father in law is a mechanic by trade, but couldn't tell me what was wrong without a computer. We bought a test light, and checked all the wiring.   I would assume the 2 issues are connected? Has anyone had this problem, and can give me some insight before I take it to my mechanic and have him charge me out the rear to see what's wrong?   Potentially a bad AC clutch or compressor? Thanks in advance for any help or guidance Replies to this message: tuggajb (Aug 07, 2007 3:59 pm) wesbuck4 (Aug 07, 2007 4:09 pm) wesbuck4 (Aug 07, 2007 4:21 pm) and 3 more...
#50 of 372 Re: 2001 Jeep Cherokee AC/Electrical Problem? [wesbuck4] by tuggajb Aug 07, 2007 (3:59 pm)
Replying to: wesbuck4 (Aug 07, 2007 3:04 pm) what engine? poss be a bad thottle possion sencer has everything to do with engine rpm and idel (send signal to computer so computer can control gas and stuff) Replies to this message: wesbuck4 (Aug 07, 2007 4:09 pm) wesbuck4 (Aug 07, 2007 4:21 pm) tuggajb (Aug 08, 2007 5:36 pm) and 2 more...

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