ac compressor - Ford Powerstroke Diesel Forum

 
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post #1 of 7 Old 07-02-2008, 12:39 PM Thread Starter
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ac compressor

my ac compressor wont stay engaged it will engage for a second or two then let go any ideas, maybe the shim?

Josh
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post #2 of 7 Old 07-02-2008, 01:10 PM
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Low on freon?


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post #3 of 7 Old 07-02-2008, 01:23 PM
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freon, low pressure switch, or shim in the ac clutch.

For mine it was the shim. Bypassing the low pressure switch would make it turn on for a few seconds and then it would stop again. Sometimes romping on it to 3000+rpms would get it to kick in for a few seconds, then it would blow warm again.
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post #4 of 7 Old 07-02-2008, 01:30 PM
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mine blows cold when the rpms are over a grand but when Im idling at operating temp it goes warm.


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post #5 of 7 Old 07-02-2008, 02:05 PM
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Quote:
Originally Posted by powerstroke23 View Post
my ac compressor wont stay engaged it will engage for a second or two then let go any ideas, maybe the shim?
Mine was doing this and when I hooked up the pressure gauge from autozone I could watch the pressure go up, it would turn on, the pressure would drop and in a few seconds the compressor would turn off. over and over again. Added 2 cans of the freon from autozone and now it works well.

Just a basic 01 F350 CCLB SRW -Good from a far but far from good
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post #6 of 7 Old 07-02-2008, 02:11 PM
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Mine was doing the exact same thing... I added one large can of freon, works great now.

Could be other things, but you are most likely just low on freon, get a can or two and a gauge.

97 F350 7.3 Off-Road Build Locked on 42's

08 2500 Cummins
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post #7 of 7 Old 07-03-2008, 05:13 AM Thread Starter
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that was when i noticed it, while i was chargeing it up

Josh
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