A\C Compressor Clutch Not Engaging
Thread Starter
3rd Gear
Joined: Feb 2018
Posts: 3
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A\C Compressor Clutch Not Engaging
I just picked up a 1992 corvette. The compressor clutch is not pulling in, the static pressure is sitting at 100 psig, with 134a in the system. I jumped the low pressure switch and the clutch did not engage, if i unplug the compressor what should be the voltage at the plug feeding the compressor
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,074
From: Lansing MI
System voltage, no less.
If you have say 14 volts across the battery while the engine is running then you should have basically the exact same thing at the clutch connector.
I would caution you about using a voltmeter on this though.
Use a test light if you have one.
If you have say 14 volts across the battery while the engine is running then you should have basically the exact same thing at the clutch connector.
I would caution you about using a voltmeter on this though.
Use a test light if you have one.
Melting Slicks
Joined: Jan 2014
Posts: 2,478
Likes: 254
From: Downers Grove Illinois
System voltage, no less.
If you have say 14 volts across the battery while the engine is running then you should have basically the exact same thing at the clutch connector.
I would caution you about using a voltmeter on this though.
Use a test light if you have one.
If you have say 14 volts across the battery while the engine is running then you should have basically the exact same thing at the clutch connector.
I would caution you about using a voltmeter on this though.
Use a test light if you have one.
Last edited by JimLentz; Feb 13, 2018 at 04:08 PM.
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,074
From: Lansing MI
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,074
From: Lansing MI
I guess don't over think it to much though; if it lights a test light up nice and bright then nine times out of ten you have a valid test.
Last edited by PatternDayTrader; Feb 13, 2018 at 04:42 PM.
