Question about 2001 Jeep Cherokee

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Jeep cherokee 2002

Heating only blowing warm air 1 side and cold on driver side temp gage on high

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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.

Posted on Oct 18, 2008

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Common Jeep problem. Blend doors are either jammed or broken. Dashboard removal is require to repair.

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Why would my 2002 Jeep Grand Cherokee only blow luke-warm to cold air when the fan is on high? First the heat went on the highest setting, so i used the second highest. Then it started to coll as...


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.

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Sounds like there is a crack in the vent that leads to the drivers side, and hot air from the engine is leaking through.

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Driver side heater blows cold air-passenger side blows hot.


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Feb 24, 2009 | 2002 Jeep Grand Cherokee

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2002 Grand Cherokee heater warm on drivers side cold on passanger


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)

Jan 22, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Heat works on driver side, passenger side blows cold air.


Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.

Jan 02, 2009 | 2001 Jeep Grand Cherokee

1 Answer

2001 Grand Cherokee Heat on one side cold air on the other side?


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

Nov 21, 2008 | 2001 Jeep Grand Cherokee

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Dual climate zones. One hot, other cold, both set on high.


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.

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3 Answers

Heat works on driver side, passenger side blows cold air.


Blend door for passenger side or blend door motor has failed. Very big job to remove dash and work on it. Except the door motor is accessable from the glove box.
Rudy

Oct 21, 2008 | 2002 Jeep Grand Cherokee

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