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11-13-2012, 09:35 PM
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#1 |
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Registered User
Join Date: Aug 2011
Location: Lethbridge Montana
Posts: 259
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ac compressor issue
hi guys 1994 chev truck the ac compressor keeps cycling on and off every like 2 seconds any ideas would be great thank you
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11-14-2012, 09:43 AM
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#2 |
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Registered User
Join Date: May 2004
Location: Minnesota
Posts: 4,621
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Re: ac compressor issue
Low on refrigerant.
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For those of you that are wondering why you are not getting replies to your thread: Did you give the model, year, engine, fuel system type, and transmission information? If it is modified from what came stock from the factory, let us know that too. |
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11-14-2012, 10:36 AM
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#3 | |
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Frequent Flyer
Join Date: Aug 2009
Location: Tulsa, OK
Posts: 2,258
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Re: ac compressor issue
Quote:
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11-15-2012, 08:43 AM
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#4 |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: ac compressor issue
Is it cycling when you have the controls selected to something other than the A/C? If so, then your control box in the cab may be messed up and it is stuck in the defrost mode, where hte A/C is supposed to cycle intermittently, to keep condensation down in the cab. Other than that if you have A/C selected and it is short-cycling, then once again LOW on freon.
Unplug the wire on the side of the accumulator pressure switch and put a jumper in it, if the compressor runs constantly, then you will need to look at the freon charge.
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Frank |
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11-16-2012, 03:13 PM
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#5 |
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Old Skool Club
 
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: ac compressor issue
If you have it set to defrost, it will cycle on and off. But, all my experience is on my '96. But low refrigerant will definately make it cycle. It's designed to do that.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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11-17-2012, 07:22 PM
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#6 |
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Registered User
Join Date: Nov 2012
Location: Fremont, CA
Posts: 8
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Re: ac compressor issue
My 95 5.7 700R Silverado has issues with the low pressure switch flaking out and causing rapid A/C clutch cycling. After checking the refrigerant pressures and finding they are okay try replacing the A/C low pressure switch.
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