Last post on Aug 31, 2013 at 3:44 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee
What is this discussion about?
Jeep Grand Cherokee, Heating / Cooling, SUV
#470 of 519 Re: ac r134 leak [barryz]
Oct 12, 2010 (8:01 am)
reply to myself, went to my honest mechanic i trust, have appointment for him to survey my system, he says jeep is famous for the unit under dash leaking, i think he said its the evaporator, he also said all the gunk i put in clogged system, the stuff blowing out and smoking on my exhaust pipe is actually a high pressure relief valve trying to do its job. I probably caused this by putting in to much super sealer, but my previous r134 leak for which i could never find leak with leak detector, was probably that under dash unit, and since it is encased in plastic, i could not see all the pag oil dripping, its trapped in case. He says replacing this is extensive, requires dash coming out, he says if my compressor is still working, when he opens refrigerant lines to take evaporator out he will be able to de junk the lines and if the evap was the problem system will be ok if i did not burn compressor seals up, which i may have done. He says his survey will tell him if thats the problem or if its something minor, but in his experience evaporator is leaking. This is only $50 to find out, will probably do without ac till next spring and if my 99 jgc is still worth it, repair ac then. I'll post back with results of ac survey. I don't regret using super sealer as it got me through 2 summers, i could have spent big bucks last year to replace evap - labor is intensive, but now its a 12 year old vehicle with 165k miles, still runs ok, maybe next spring i will fix.
#471 of 519 Re: Recirculation Door Problem [blendor]
Nov 02, 2010 (6:17 am)
I am having the same problems as described above. Question is, how do you do the following: "You can lift the fallen recirculation door up off the blower and the air flow will be restored."
Thank you for your time.
#472 of 519 Re: 2003 Grand Cheorekee with A/C and Heat problems [blendor]
Nov 07, 2010 (12:55 pm)
I see this is an old post, but I am hoping someone can help. The heat in my 99 Grand Cherokee Limited has completely gone out. I took it to a mechanic who told me the blend door motor needs to be replaced. He said the labor alone would be like $200 because he would have to take the dash out to fix it. I have read that to replace the blend door motor all that has to be done is take the glove box out and replace the motor. Will the entire dash have to be taken off or not? I have the fault codes, which are: 20, 54, 56. I just need to know if this is something I can fix myself and not have to spend hundreds of dollars to fix. It is getting cold and I have two small kids, and I need some heat !!! Help !!!
Nov 07, 2010 (5:38 pm)
Check Message # 4674 it could solve your problem. How to go through the Glove Box.
Was posted ... by folsomjeeper Jan 11, 2010 (8:50 pm)
Hope it works for you.
Best of luck to you.
#474 of 519 Re: 2003 Grand Cheorekee with A/C and Heat problems [woowoowooty]
Nov 08, 2010 (6:22 am)
First off, if you already haven't, review more threads in this forum regarding the loss of heat and get thoroughly educated on what's going on with the HVAC system. You sound like you have the same issue many have experienced. Your code 20 is the recirc door travel too large. The 54 and 56 are for the left and right blend door travel being too large. Your motors are probably still working! Your OEM blend doors are probably just laying inside due to them being a total POS and poorly designed and costructed by Chrysler. I just performed this yesterday and now have heat again. But my codes were 54 and 56 and my recirc door still works. There are several kits you can buy on the internet and ebay to fix this problem by going in through the glove box and replacing your blend doors. Not sure which to reccommend you choose as they both seem to do the job. Good luck and I hope you can do the fix and save yourself $1000. Don't go to Chrysler to buy the blend doors as I have heard they improved the doors but they are still POS compared to the guys' doors on ebay and the net.
Feb 15, 2011 (2:21 am)
Good day all. I have a 01 GC Laredo. I am having an issue with low flow out of the Heater/AC vents. On Panel/Recirc, I get strong flow from the 2 center vents but only a trickle out of the side vents. On defrost or floor, I get very low flow from either. The fan works on all speed settings. Also, when going down the road, when transitioning to a passing situtaion or upshift, the flow cycles from whatever setting selected to defrost. Any ideas?
#478 of 519 Re: Low air flow [jonnshell]
Feb 15, 2011 (9:41 am)
vacuum leak some where
prob the storage tank behind front bumper most times leak is under battery where hose goes
Jul 07, 2011 (4:58 pm)
My Cherokee has outside air (hot) coming in and raising the temp of the air. This is really noticeable when driving. There does not seem to be as much hot air being introduced when fan is on low. When fan is on low it is not possible to cool off the interior. Temps here now averaging 105 and it is quite humid also. My mechanic has checked out everything and says it appears to be under the dash but doesn't know of a "door" there. He is trying to avoid taking off the dash completely. Can anyone help?