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Jeep Grand Cherokee A/C Heating Ventilation

510 messages,  Last post on Mar 23, 2013 at 12:29 PM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

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

Messages Page 49 of 51

#480 of 510 1997 jeep a/c vacuum line by noklue

Jul 12, 2011 (8:02 am)

my a/c cruise control vacuum line broke off where it goes into the firwall in the engine compartment how do i fix it cant seem to find a diagram

#481 of 510 2002 GC no air volume on heat or AC by dreinke

Jul 21, 2011 (4:48 pm)

I've been trying to determine what's wrong with the HVAC system in the GC. So far I've confirmed the recirculate door is broken and have permanently secured it in the recirculate position. I've cut the plastic behind the glovebox to determine if the blend doors work. They both move in the correct direction that's determined by the temp selection for each side of the system. The problem is there is no signficant volume coming out of the vents on either side of the car. No volume coming out of the defrost or the floor vents either. The fan is blowing hard which is felt when the plastic is open showing the blend doors. When the plastic is put back, there's still no air coming out of any of the vents. Any help is much appreciated.

#482 of 510 2004 jeep grand cherokee a/c problem by jreadmond

Jul 22, 2011 (2:49 pm)

ive been having a problem with my a/c working then not working. when the outside temperture is about 85 or lower the a/c works fine but when it goes higher then that it only blows warm air out. ive had it serviced and the freon level is good and so is all the pressures. please help with this. thanks.

#483 of 510 01 GC limited low airflow passenger air vents by rolo10

Aug 01, 2011 (11:05 am)

I have low/no airflow to just the passenger front vents, the center and driver's vent has good flow when panel selected. I have done the self test and no codes are thrown. I have looked at the recirc door thru the glove box and that is working. I see that at least the driver's side blend door actuator is turning and I don't have a problem with temp control. I have looked at the mode door actuator and everything seems to be moving in the correct direction and the airflow does change to defrost, floor and panel when selected. Any way to get eyes on the actual left/right mode door to verify motion other than pulling the panel? Any other ideas on what the cause might be on the dual zone system?

#484 of 510 Re: Low air flow [jonnshell] by confused40

Aug 03, 2011 (2:27 pm)

Replying to: jonnshell (Feb 15, 2011 3:21 am)
Hi jonnshell I just bought a G/C and having the same problem, have you found out what the fix is.

#485 of 510 Air flow Jeep G/C by confused40

Aug 03, 2011 (2:32 pm)

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 some air 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.

#486 of 510 problems Jeep G/C A/C by confused40

Aug 03, 2011 (2:41 pm)

How do you lift the fallen recirculation door up off the blower

#487 of 510 over heating by scootertramp40

Aug 11, 2011 (1:54 pm)

on my way back home from a long trip my jeep over heated and i blew out the heater core ,i did a bypass and filled the cooling system but then it still over heated ,i left the radiator cap off an noticed it was back flowing so i changed out the thermostat but its still over heating and back flowing could this be the water pump failing to circulate or could it be some sensor that hasn't registered on my codes ?

#488 of 510 1997 GC little or no air coming out of dashboard vents by jmarik

Aug 12, 2011 (6:56 pm)

Most of the air is coming out of the floor vents. This is ok unless it's really hot and you need the cold air conditioning blowing out the dash. Anyway, checked the vacuum hoses and found them to be ok, have plenty of vacuum. Had a mechanic look at it and he said that a part under the dash needs replaced. Means big bucks to remove dash. I am fairly mechanically inclined and would like to try to fix myself. Does anyone know where to find info. on how to remove the dash to access the air flow mechanism for the dash vents?

#489 of 510 Dashboard Vents Info for: jmarik by offroadpep

Aug 12, 2011 (8:47 pm)

jmarik ... Messages 407 & 408 may help you.
 
Also check this page ... http://www.heatertreater.net/Jeep%20Page.htm

Messages Page 49 of 51

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