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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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#346 of 372 2004 Jeep Grand Cherokee AC problems by bradc1 Jul 15, 2009 (4:03 pm)
Sorry if this question has already been asked. I just bought a 2004 Laredo with a 4.0L. Strange AC problem is happening. The AC LED intermittently goes out. If i press the rear defrost button twice, it comes back on! took it back to the dealer. They found a cracked vacuum hose, but the problem still remains. It doesnt do it all the time, but it always seems to comes back when i hit the rear defrost twice. when the light goes out, it blows warm air. It blows cold air normally when the AC light is on. Any ideas??
#347 of 372 Re: Jeep GC Blowing hot air [skinsfan1] by rlipcz01 Jul 17, 2009 (7:01 pm)
Replying to: skinsfan1 (May 19, 2009 3:23 pm) My wife has a 2003 grand cherokee laredo. The problems are the 3 control Knobs that control your air.$450. includes control knobs and to be on safe side the expansion valve. included recharging the system....... It took us 5 years to figure it out.....
#348 of 372 2003 Jeep problems by bradyr Jul 20, 2009 (7:35 am)
I have 2003 GC limited 4w quadratrac with a few problems and any help would be appreciated as the dealers I take it to care only about money and creating new problems for higher payments. I have had the vent problems and heating problems and replaced twiced in 2 years. Now the heat/ac and temp. settings work fine but I only get heat/ac from the defrost or floor vents. I was told I need a new control panel for 750. Dont remember code numbers but more or less the two motors werent working directing the air flow. Next, there is a constant clicking when the car is turned on coming from behind the driver side dash- dealer couldnt tell me what that was--kinda funny. Next- at low speeds when turning- there is a whinning from the engine- possible belt problem was my first thought--a second opinion would help and last- when on the freeways and hitting the sectional gaps in the freeways- I fell heavy vibrations through the floor- (like hitting a metal poll with another metal object- the vibrations that go through your arm and hand) possibly shocks or maybe stablizer bar if there is one. Any help regtarding these few problems would be greatly appreciated as I somewhat like to know whats going on with my car before I take it anywhere...thanks again and have a great day.   Bradyr
#349 of 372 Defrost Only by socaldon Jul 27, 2009 (9:06 am)
Hi Guys,   I saw this question earlier in the thread but could find no replies. I have a 1997 JGC 4x4 V8 and, whilst the air conditioning seems to work, the air will only blow onto the windscreen. It doesn't matter what the control is pointing at - it refuses to blow air out of the vents.   Any ideas? Thanks in advance.   Dave Burbank, CA - a little toasty round here so help would be appreciated! Replies to this message: jdeaton (Sep 06, 2009 12:14 pm) socaldon (Sep 06, 2009 6:40 pm)
#350 of 372 No AC on passenger side by gerry914 Jul 30, 2009 (4:46 am)
1999 JLC no cold air coming out of the two vents on the righthand side of the vehicle. two leftside, and two center vents appear to be working ok. what do you believe is my problem, some one mention the vacuum hose on the rightside under the radiator filler bottle? Replies to this message: ulitima (Aug 10, 2009 6:12 am)
#351 of 372 Re: No AC on passenger side [gerry914] by ulitima Aug 10, 2009 (6:12 am)
Replying to: gerry914 (Jul 30, 2009 4:46 am) I have the same issue, what was the fix for your problem -
#352 of 372 No AC in a 2000 Jeep Grand Cherokee LTD codes 54 56 by danielbaute Aug 17, 2009 (1:53 pm)
This is my wifes jeep... she was driving it on a very hot day recently according to her everything was working fine when all the sudden the fan stopped working. I found several posts about this problem that said to check the wiring harness at the fan controller/check for voltage/etc... the wire connector was slightly burnt and I could not remove the connector. Trip to the junk yard yielded a new fan controller and fan for a decent price and after replacing the parts it worked. However the AC wouldn't work. After reading more posts the common problem would seem to be a broken blend door, after running the diagnostics I got error codes 54 and 56 which are both door travel codes. So I got the new blend door repair kit from the dealer as the parts had all been removed on the jeeps at the junk yard and tore the dash out of her car down to the heater housing. I now have the dash completely out and I can see 3 of the 4 blend doors on the heater housing and none of the ones i can see are broken. I'm also unsure as to why the AC compressor will not turn on. I have a 99 grand Cherokee and I have tried the auto temp control panel from my jeep in her hers and receive the same codes when I put it in hers and no codes when its in mine. I've checked all the fuses under the dash as well as the fuse/relay box under the hood. I even swapped the ac relay with the horn relay and I still cannot get the compressor to run. I'm to the point I guess I need to remove the heater housing but I'm afraid i'm missing something simple. Does anyone have any suggestions? Replies to this message: danielbaute (Sep 18, 2009 2:51 pm)
#353 of 372 Re: '99 Grand Cherokee AC compressor clutch [sethybob] by sethybob Aug 17, 2009 (6:21 pm)
Replying to: sethybob (Jul 01, 2009 10:38 am) I removed the front portion of the clutch assembly which can be removed by simply removing the 10mm bolt. There is a washer behind this assembly that can be removed to move the clutch face closer together. Works great now.
#354 of 372 Re: 2001 Jeep GC Limited AC only blowing hot air [danierob] by compton3 Aug 18, 2009 (4:25 pm)
Replying to: danierob (Jul 04, 2009 12:38 am) maybe the press switch on the low side the clicking was the clutch on com. working and the presure sould be in 100s when the compresure in not working or 40 to 60 when full and running   good luck
#355 of 372 Re: air conditioning problem [paulsk] by matt73 Aug 19, 2009 (2:38 am)
Replying to: paulsk (Jun 28, 2007 3:53 pm) Can anyone tell me where the cabin air filter is on a 2001 JGC Replies to this message: topat46 (Aug 19, 2009 3:00 am)

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