AC cuts out
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Tuned
Joined: Aug 2003
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AC cuts out
Turns on ok and runs for about 5 minutes then cool air fades out and stays gone until system is turned off for about 5 minutes. Then it will come on and provide cool air for another 5 minutes Lo side pressure looks good at about 47. Air gap on compressor measures about 35mils. No defrost leakage when 4 wd is engaged.
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Tuned
Joined: Aug 2003
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Thanks guys. I have been planning to pull over and check if compressor is running next time it cuts out but so far it hasn't been "convenient" to do and so it always been "i'll do it l;ater"
What should highside pressure be in case I need to check that.
What should highside pressure be in case I need to check that.
Fleet Mechanic
Joined: Jul 2010
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From: Los Angeles, Ca.
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FTE Chapter Leader
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From: Henderson, NV
Originally Posted by dcara
What should highside pressure be in case I need to check that.
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That happened to mine. Took it to a guy who knew what to do. He pulled a shim out of the clutch on the compressor, problem solved. The man who did it was the owner of a reputable ac shop in Mobile, Al. He said he sees this allot.
Cargo Master
Joined: Aug 2003
Posts: 2,332
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From: Eastern Washington
47 is pretty high, what is ambient temp? And what is the high side? Figure out if the clutch is cycling.
My bet is low charge, but you need more info and a proper evac to confirm that.
My bet is low charge, but you need more info and a proper evac to confirm that.
FTE Chapter Leader
Joined: Jan 2005
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From: Henderson, NV
Originally Posted by Finmanfish
He pulled a shim out of the clutch on the compressor, problem solved.
If refrigerant pressures are indeed okay, one way to test if the air gap is marginal is to tap on the front of the clutch while the AC is running and see if the clutch engages. If it does engage after a tap, then removing that shim should fix it. If not, then the clutch solenoid is probably bad.
Lead Driver
Joined: Jul 2003
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From: Wheatland, Mo
So you had more than one and removed only 1 or there was just 1 there and now none?