The AC on my truck will work sometimes and then other times it blows out hot air. Is this a result of low freon, compressor, belts, relay, filter???
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1998 Ford F-150 Question: Air Conditioner
Answer #1Bret Bodas from RepairPal Test Shop, July 09, 2010, 15:04Master
An A/C Diagnosis will be needed to determine the problem. It could be a few of the things you mention and it could be other things as well.
Answer #2Visitor, November 09, 2010, 17:58
I have a Ford F150 4.2l. When the compresser gets low of freon the clutch on the compressor will not enage thus causing the hot air. Based on My experience.
ReplyBlack Bear, November 10, 2010, 14:20Rookie
now that colder weather is approaching, I noticed that I don't have hot air either. Comments?
Replybklaubert, December 03, 2010, 19:27Enthusiast
If you sometimes have cold air, and other times not. And then other times you can't get hot air, you may have a bad "blend air door actuator motor". Your ac/heat system has an electric controlled damper to blend hot air off of the heater core with cold air off of the evaporator core. When the air will get plenty hot turning the knob to red, but will never get cold - that's often low freon. When it won't get hot and won't get cold, and sometimes works better than others, that's often the blend air door actuator.
You wouldn't want to guess on any of those. You could begin to replace a part that's perfectly good, and still have a problem. You would save money in the long run having it diagnosed by a garage.
Answer #3Visitor, June 03, 2011, 21:40
my air conditioner goes from cold to hot