Question about 1997 Jeep Grand Cherokee
I am having problems with both my heating and AC. When I cut the heat on, it blows slightly warm air, but not enough to warm the vehicle. I have the exact same problem with my AC. When I cut the AC on it blows slightly cold air, but not enough to cool the vehicle. I have found people who have one or the other problems, but not both. I would think that they are connected somehow. I bought the Jeep like this so I have no information about if they went out together or if one went out then the other went out later. I'm thinking that it might be a hole in one of the vent shafts, but I wouldn't know where to start looking. Thank you guys in advance for helping me out with this.
There are a couple of things you should check. first thing check that the fan and swirl cage are still together. this can be done two ways. simply turn either the ac or heat on and turn the blower up to hi quickly and listen to see if you hear the whine of the motor along with the force of the air go up. if you only hear the whine of the motor go up, there is your problem. most require a locking washer or a pressed cap. you can either be enginuitive on how you get it to stop spinning or take it to an automotive mechanic. next thing that could be wrong is the speed control knob could be broken. you can test that by either hooking up a known good blower motor and turning it up and down. seeing if it changes speeds or testing it with a multi meter. now if its air temp your having a problem with directly under the center of the dash behind a black plastic panel there is an ambiant temp baffle that controls just what its name is. there is a servo attached to it via a metalic rod. that is the only other thing i can think of..
Posted on Jan 25, 2009
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