A/C Compressor Runs All The Time?
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A/C Compressor Runs All The Time?
While checking my automatic transmission level this weekend I spent a lot of time near my idling engine. I noticed the Air Conditioner Compressor would kick on, and after a while cycle off. I jumped in the cab thinking I'd mistakenly switched the A/C on....its cold up here in the Northwest! Anyway, the heat was full on.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
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Joined: May 2002
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From: East Texas
Originally Posted by Bad Company
While checking my automatic transmission level this weekend I spent a lot of time near my idling engine. I noticed the Air Conditioner Compressor would kick on, and after a while cycle off. I jumped in the cab thinking I'd mistakenly switched the A/C on....its cold up here in the Northwest! Anyway, the heat was full on.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
gseeders
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Joined: May 2002
Posts: 301
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From: East Texas
Originally Posted by Bad Company
I have always been under the impression that the AC compressor would only engage its clutch when air conditioning was selected. Do all auto AC systems operate this way?
gseeders
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Joined: Oct 2004
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You didn't describe your truck. In my 02 250 PSD the AC does NOT run with the air directed only to the dash or only to the floor. It runs with the switch in all other positiions. From reading the owners manual I believe this is normal.
For future reference, you should develop a Signature which describes your vehicle and also any personal info you want to share.
Warren
For future reference, you should develop a Signature which describes your vehicle and also any personal info you want to share.
Warren
Originally Posted by Bad Company
While checking my automatic transmission level this weekend I spent a lot of time near my idling engine. I noticed the Air Conditioner Compressor would kick on, and after a while cycle off. I jumped in the cab thinking I'd mistakenly switched the A/C on....its cold up here in the Northwest! Anyway, the heat was full on.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
Any ideas folks? This isn't normal is it? Any thoughts or ideas would be appreciated.
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A/C always on
The AC compressor should be cycling while in the AC or either of the defrost positions. The AC removes the moisture from the air.
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From: colorado
Originally Posted by slc10844
On my 03 the A/C compressor will cycle in all positions except vent and floor heat only.
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From: Central Texas
Every vehicle I've ever worked on only engages the A/C clutch when it's in A/C or defrost mode. Maybe some of the newer ones 2000+ engage in other positions but I can't figure out why they would. Most often, if your a/c is comming of and on (clutch quickly engaging then disengaging) it's do to a lack of refrigerant in the system. Or rarely a bad low pressure sensor. Put some guages on it and let us know what you find out.
