Jeep Grand Cherokee Problem Report
Jeep Grand Cherokee Temperature Blend/Recirculation Doors May Fail and Cause AC Problems
Temperature blend and recirculation doors commonly fail, which can cause the AC modes not to change or the temperature to be different on the left and right sides. If replacing blend air doors, a recirculation door, a door link, or a sub-assembly housing, new heating, ventilation and AC (HVAC) sub-assemblies are available that improve reliability.
Hey Guys... If you are getting NO air through the ducts and the fan is on, it is probably the recirculation door behind the glove box. Mine broke and fell to block any air coming from the fan. Easy, cheap fix - I removed the glove box, used a wood shish kabob stick to lift the door back into the open position then used wire to secure the stick to the plastic grate covering the cabin air intake. I now get great air circulation.
If there is a problem with temperature control and/or differences between the passenger and driver sides, then it is probably the blend doors. Mine broke too... - M37
I had the blend doors and recirculating fan replaced 3 years ago. I have experienced a heater /ac problem again. i installed new blend doors and that did not correct the problem, the old plastic blend doors were still good. I have noticed the blower sound like it is on but no major air flow comes out of the vents, not to mention no heat. what may be the cause, im lost . - Visitor
My air flow through air registers would not change. It was always on the defrost mode. Found the VACUUM hose not attached on the intake manifold side. Connected the hose all systems back to normal. (vacuum hose located on the driver side under the hood) Check the intake manifold there should vacuum hoses connected to the intake manifold. There is also a diagram and a notation under the hood. When you open the hood this information is on the underside of the hood (front end) - Visitor
AIR DOES NOT COME FROM ALL VENTS, MOSTLY COMES OUT FROM FRONT WINDOW DEFROSTER - Visitor
cold on passenger side when heat is on!!! - Visitor
Heat on the pass side cold on the driver side....quoted $1500 to fix. $500 for parts, $1000 for labor. I feel like I could fix this myself but not sure how hard it actually is or the steps that need to be taken to avoid causing more dammage. - Visitor
No Heater, no hot air blowing after temperature is raised. - Visitor
pass / side cold air drvr's side any temp you wanted. found out dlr weanted $ 1300 plus estemated. jcg.com sells kit w/instructions did it myself for 150.00. - Visitor
right side air is always at the coldest. no heat on the right side and air temp will not change, left side works good. - Visitor
cut a hole put a screw in to hold them in place for winter - Visitor
I get cold air on driver side and warm air on the passenger side - Visitor
No heat on passenger side---replacing the broken factory plastic blend doors with stainless steel
from HeaterTreater. - Visitor
2011 Jeep GC lost heat on passenger side after loud calibrating noise coming from mid lower dash. 2 weeks later same with drivers side. No heat at all now. Diagnosed as need of Blend/Mode Door Housing. The whole front dash needs to be removed at a cost of $1082.00 + tax. Cant believe they are still using this design being it affects a multitude of year models. - Visitor
We get AC out of driver side and warm air out of passenger in the summer. In winter the driver is freezing and the passenger is comfortable. Is there a recall if it happens so much? - Visitor
A/C system, and heat/heater core in this vehicle suck! - Visitor
no heat inside cab - Visitor
When I have the heat off, it blows out hot air. - Visitor
The door to the outside air broke and would not open or close. - Visitor
Actuator on passenger side of my Laredo failed and stripped a little plastic gear. Actuator readily available but not the gear as a separate piece. Dealer says whole unit has to be replaced at a cost of $1200.00. Other gear very similar is available and costs about $3.00 which indicates what the unavailable one would be worth! - Visitor
The air conditioning blowing out of the vents on the driver side is considerably colder than th...
When I drive on a highway I got an air comes in even the ac is not working!!
The temperature o...
Failure in the blower motor power module (automatic temperature controls) or resistor block (ma...
i can't change the air flow position when the AC is working always the air is out from the fron...
I have a 1994 JGC where the blower motor does not chnage speed with the automatic temperature c...