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Jeep AC working wierd


 
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jefferywilson1980
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Joined: 24 Sep 2005
Location: ARKANSAS

PostPosted: Sat Sep 24, 2005 5:20 am    Post subject: Jeep AC working wierd Reply with quote

I recently bought a 98 Jeep Grand Cherokee and the AC will blowing out

the vents until i push the gas then it will change to what seems like the

defroster i think it is a sensor that is going bad but i dont know which one

it is also the gas milage is going down drastically and it is over heating

even though i have changed the thermostat fan clutch flushed the system

any help would be greatly apperciated
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Jeffery Wilson
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Kirk715
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Joined: 01 Nov 2005

PostPosted: Tue Nov 01, 2005 9:45 pm    Post subject: Grand Cherokee A/C weirdness & overheating Reply with quote

Hi - I too have had A/C problems that when I go up a hill especially at higher speeds, the A/C starts blowing out the defroster vent. The dealer is skeptical that I have a problem. It usually goes away when the car levels out or power drops. I have to believe that it is a loose vent cover that the angle of the car will set off in combination with the airflow. I just figure it is not worth spending money on.

Re; Overheating - I went to a lower pressure radiator cap. I think the original specs call for 18 psi, but I have been using 13 psi with fine results. I think the higher psi was preventing the thermostat from functioning. I was getting overheating in the engine with cold water/fluid still iin the radiator.
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