1999 Jeep Cherokee TESTING A/C COPMPRESSOR

1999 JEEP CHEROKEE
160,000 MILES • 6 CYL • AWD • AUTOMATIC
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BIGBORESHOOTER
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can you tell me how to test an a/c compressor on a 99 jeep cherokee sport, the a/c stopped working and I'm not sure if the compressor is working I have been told this is the most common problem on this vehicle
May 31, 2010 at 5:38 AM
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OBXAUTOMEDIC
  • ✓Experienced Mechanic
  • 3,711 POSTS
Hello,

First start by looking at the front on the A/C Compressor with vehicle off pay CLOSE ATTENTION to the very front. Now start the vehicle turn or leave A/C off look at the front of the compressor. Now turn on or better have someone turn the A/C on. Does the front of the compressor start spinning?

And does is kick in and out about every few seconds. If so you are most likely just low on freon. And a charge will fix it.

If front of compressor doesn't start spinning then it could be a couple of things.

A/C Relay

Bad Low Pressure Switch

Or a bad A/C Clutch (what you were looking at on the front of the compressor)

.
May 31, 2010 at 6:32 AM
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