Question about 1989 Cadillac Sedan DeVille
My air cond. compressor kicks on and off all the time and doesn't cool????
If the compressor kicks on and off and doesn't cool this is the first sign of not having enough charge in the system. the a/c clutch will always kick on and off while running becuase this is dictated by the expansion valve which regulates the system, however you should have cool air about 50 degrees F for 134a at 35 psi on lowside and 130 150 psi on high side. the undercharge can becaused by degration of the 134a overtime or a leak in the system. have a certified ac tech look at the system and do a vaccum check for leaks if it holds a vaccum for 15 minutes at -29psi then there is no leak and the system just needs recharging.. please rate this
Posted on Oct 01, 2008
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Posted on Jan 02, 2017
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