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04-08-2016, 03:22 PM
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#1 |
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Registered User
Join Date: Sep 2015
Location: Tampa, FL
Posts: 57
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AC compressor wont kick on..
Can you guys help me out with this please? I am working on a 72 Cheyenne super with factory air. My AC compressor will not kick on. Fan switch works fine on all speeds. Air blows strong from the vents. Can you please tell me what actually signals the compressor to turn on? I tried moving the top lever to AIR but still nothing. Thanks for the help.
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04-08-2016, 03:40 PM
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#2 |
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Registered User
Join Date: Sep 2015
Location: Tampa, FL
Posts: 57
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Re: AC compressor wont kick on..
I jumped the low pressure switch and it came on. I guess its low.
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04-08-2016, 03:50 PM
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#3 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: AC compressor wont kick on..
There is a plunger switch behind the duct work right before the floor vent. If it's not pushed in it want come on. This is what makes the compressor kick on per the system. So if you jumped the LP switch out and it ran then it's working. Don't run it long with that switch jumped.
This is the factory manual drawing of the wiring.  
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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