A\C Compressor Clutch Not Engaging
02-13-2018, 03:29 PM
#1
3rd Gear
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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
02-13-2018, 03:46 PM
#2
Race Director
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.
02-13-2018, 04:08 PM
#3
Melting Slicks
Member Since: Jan 2014
Location: Downers Grove Illinois
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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; 02-13-2018 at 04:08 PM.
02-13-2018, 04:15 PM
#4
Race Director
02-13-2018, 04:41 PM
#6
Race Director
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; 02-13-2018 at 04:42 PM.