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Re: jeep cherokee 2002
Most likely cause is a broken dual zone blend/temp door in the heater box. There is a revised part available from a dealer. It is a big job to replace requiring the dash to come out and heater box. Sometimes, but rarely, it is one of the electric actuators or control head that's the culprit.
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Dec 7, 2009 - When I turn on the heat, the passenger side is receiving warm/hot air but ... blow hot air on the drivers side and it would get cold right away. about a week ago... I have a 2008 Dodge Ram 2500 SLT. ... Regardless of the settings cold air blows from the left vent and on the floor on driver and passenger sides.
2008 Jeep Grand Cherokee143,000Visitor. I get cold air on driver side and warm air on the passenger side. Upvote (29) ... right side air is always at the coldest. no heat on the right side and air temp will not change, left side works good. .... Models: · Honda Accord; ·; Toyota Camry; ·; Honda Civic; ·; Acura TL; ·; Toyota Corolla ...
Sounds like you need a blower motor resistor located down under dash on pass side next to blower motor. This is a comon problem and I have changed many of them. thats just the fan speed problem. Ive seen the blend doors break easily on those jeeps. thats inside the heaer core box and moves the flap from hot air to cold air. If it is stuck halfway -or mostly to cold- you may only get luke warm air. If they had the heater core out-maybe they possibly broke it.
generally this is caused by a "blend door " motor (actually a vacuum control) not working. I don't have a diagram on this but if you watch the motors mounted to the heater box under the dash, and operate the control, you likely will find one not moving (check all positions including a/c)
The blend door on the passenger side has broken. Jeep has made a replacement section for the heater box assembly so you don't have to buy the whole thing. You will need to remove the heater/A/C box to replace the part. I have done quite a few of these repairs to fix the problem
Go to heatertreater.net. I bought one for my jgc and now it's working great. It's the blend doors that are broken. My has dual temp controls but it still worked for mine. The only thing is, the passenger side heat and air temp stays the same as the driver's side. Who cares!!!!!! It's warm and a whole lot cheaper than what the dealer costs. It took approx. 1 hour and $120.00 for the part. I paid $20.00 extra for express shipping. It's getting cold in Tennessee.