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Ther are really to many probable causes to even start diagnosing with out more info.Really need a tech to look at it,or understand how it works and have equipment to diagnose yourself.But to answer your question ,Something in your system is not operating the way it is supposed to.
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∙ 12y ago
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What causes AC to blow hot air when in idle at the traffic light?
You probably have a low refrigerant level.
What are possible causes for car ac to blow hot air with the pump engaged?
The chemical in the air conditioning unit needs replaced.
What causes the front AC to blow cold air while the rear AC blows hot air on a Chevy 1995 suburban?
Most likely the rear expansion tube or valve is defective.
Why does your 2003 Chevy trailblazers air conditioner blow hot air?
Your AC is not working. Common causes are: lack of freon broken belt compressor failed
What if your car ac blowing hot air after you changed the battery why?
your car ac will only blow hot air when there coolannt in the car is finished or the car is oveerheated.
What can cause the ac not to blow air out?
clean the part which is in front by opening it . it is the part which sucks hot air
Can a bad thermostat make ac blow hot air?
No. The thermostat is not likely to be the cause.
How do you fix a 1994 JGC that blows hot air even when on ac setting?
refill the a/c, it will blow hot air with no refrigerant in the vehicle.
Why does the rear ac in 97 Chevy venture blow hot air when the front ac blows cool air?
"http://wiki.answers.com/Q/Why_does_the_rear_ac_in_97_chevy_venture_blow_hot_air_when_the_front_ac_blows_cool_air"
Why does your central air unit blow cold air for only a few minutes then blows warm air?
why does ac blow warm air? why does ac blow warm air?
Why would your ac in your 2000 Saturn SC1 blow hot air?
you might need to refill the freeon
What causes 1994 Grand AM SE Air conditioner to blow hot air when driving slowly in town but very cold air when getting on highway at speed of 55 or more?
Make sure the radiator fan is turning on when the AC is running.
