Question about Cars & Trucks
Ac blows hot air Checked Freon, ok fan only blows on high 1 1/2 years ago fan quit blowing. Got a solid state board inside the heater/ac control unit from a junk yard and has worked fine till now. do I need to replace that again
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Posted on Jan 02, 2017
SOURCE: 99 STS AC is blowing hot air
I had the same problem but it was blowing hot air on the passenger side of the car. I assume you have the dual zone controls that I have as well. The problem is most likely the damper that controls the flow of hot and cold air into the car. The motorized component of the damper is most likely not working and its stuck in the hot air position.
I had mine replaced by a repair shop so I cant tell you how to replace it but it may be something that you can do if you have the time and patience to work on it.
Posted on Jun 09, 2009
Is the compressor kicking on? If not and the pressure is in the normal range then I would say that the low pressure switch is stuck. It is located on the canister right beside of where you hook up the freon. Unplug it and cross out the plug and see if it starts then.
Posted on Jun 11, 2010
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