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Comments
My brother in law is experiencing this problem in his '02 Jeep Grand Cherokee Limited as well. I lowered the glove box and located the grill or grid area and did not see the gray foam door. I am assuming that this is why his airflow is restricted, however the defrost and floor vents seem to blow just fine. My question would be if the gray door has indeed fallen down to block the air how do I remove the door in question?
I have never seen this advice anywhere in a car makers instruction book. I had my Grand Cherokee '99 4.7L v8 AC rebuilt by Kings Jeep dealers after it was found to have failed @ 5 years ago and have studiously kept to the rule of run the unit on air conditioning mode for at least 20 minutes a week - summer AND winter ever since - and its never needed gassing up since then and works well to this day.
This tip i got from an air conditioning expert - so why doesn't it appear in any car book advice?
anyone any thoughts
when the support shaft brakes then you have uncontrolled temps
search blend doors on internet
You can find more posts on here about it or go to the Jeep forum pages and it will have info as well. I have found that I get ALOT more help on the Jeep forum pages. There is a kit you can buy off E-Bay or online for about $125.00. The only problem with that is that you have to cut a small opening under the passenger side to get to the blend doors. I haven't done it yet, but I ran a diagnostic on the problem and that is what it said the problem is. When I get the money to fix it I will get someone who knows what they are doing to do the actual work on it. It will be getting cold soon and I sure want heat this winter. I hope I was some help to you. If you need more help, let me know. I can probably find how to run the diagnostic on it again if you want to try that. Unfortunately, this is only one of SEVERAL problems I am having with my Grand Cherokee. :sick:
I have a 1998 cherokee sport 4x4, the a/c will turn on fine but some times will cut off afer a while and some times will run just fine, when it cuts off I have to turn the a/c off for a few minutes and turn it on and it will run fine again. any Ideas as to why? I would appreciate the help,
thanks
I have a 2002 JGC 6.0 2WD. 1st it only blew cold air from the driver side and middle. The passenger side only blew cool air. I then got a recharge and it didn't take at all. After that the system only blew out warm air and no cold at all. The heater works fine. I checked the motor and its working. i checked the pin for the blend doors at that is ok. The compressor kicks on. Now, air only comes out of the defroster and no other vent. I was able to remove the radio cluster and look at the middle vents. I was able to push back the door and air did come out. I just need some help in looking for what to do. I have a 3month old and it gets pretty out and don't like him to be in the car. all help is much appreciated.
Congratulations on the new baby!
The 99/04 Jeep Grand Cherokee’s HVAC system does not have vacuum lines. All moving parts are operated with electric actuator motors.
The AC not working properly could be a number of things, from a minor leak in the lines, control module problems, to sensors in the transmission, to name a few things.
Your symptom of “Now air only comes out of the defroster and no other vent.” sounds like you are having Mode door or mode door linkage problems.
If you are talking about moving a door that is behind the two vent openings under the radio. Then that is a sign of a broken mode door, because the mode door should not be able to move freely unless it is broken.
There are three mode doors.
To replace the mode doors you need to remove the dashboard and HVAC box from the vehicle.
Blen Dor
i assume that he has the same system that my GR has where you dont have control separately pass and driver side thus the vacuum leak test vacuum line comes in on pass side just a at the bottom of the heater box should have a check valve right by the firewall inside pass compartment
Yes you are right, the MTC (Manual Temperature Control) systems do use a combination of actuator motors and vacuum controls.
Only the Limited and the Overland models have the AZC (Automatic Zone Control) systems that have all actuator motors.
Blen Dor
if not could be low on freon
I have a quick question regarding the blower motor resistor. I have had all the problems with the vent doors, actuator motors and all other crap parts jeep puts on their vehicles....I complained to chrysler due to my dash haveing to be removed 4 times for the vent problems and chrysler paid for my final repairs minus the 100 deductible---just a suggestion to everyone else on here....call chrysler and complain....no to my current problem...yes my blower motor resister connection melted creating a bad connection for the black wire port in turn creating my newly installed vent system to not operate...i tred removing the resister but due to melted plastic I cant seem to disconnect the port....how if any way possible can i cut the plastic or disconnect the resistor motor from its connection so I can clean or cut the melted plastic to create a solid connection to the black wire terminal so my a/c system will work......any help would be greatly appreciated...thanks in advance and may all have a good weekend.....also jeep is dead set on MOPAR parts due to Jeep and mopar agreements...personally I think mopar parts suck a%$ cause I have replaced nearly every mopar interior part on my jeep...are there any other quality manufacturers for the blower motor resister in case I have to buy a new one??????
Thanks!
Hope this helps.
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.
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.
OffRoadPep
I guess that message number no longer works ?
Try this link for "Going through the Glove Box.
http://townhall-talk.edmunds.com/direct/view/.eea888d/4673
Hope it works.
OffRoadPep
prob the storage tank behind front bumper most times leak is under battery where hose goes
Also check this page ... http://www.heatertreater.net/Jeep%20Page.htm