1999 Jeep Cherokee TESTING A/C COPMPRESSOR

Tiny
BIGBORESHOOTER
  • MEMBER
  • 1999 JEEP CHEROKEE
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 160,000 MILES
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
Monday, May 31st, 2010 AT 12:38 PM

1 Reply

Tiny
OBXAUTOMEDIC
  • 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)

.
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Monday, May 31st, 2010 AT 1:32 PM

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