A/C relay

CHEVROLET BLAZER
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SLINKY46725
  • MEMBER
  • 1 POST
2001 Chevrolet Blazer - 4.6 Vortek - 90,000 mi.
I recently had some heat problems with this truck which I just repaired. I have awsome heat now, however, my a/c pump always stays running. I have to unplug the wire to the pump to shut it off. Is my problem a bad relay in the fuse box compartment under the hood?
Oct 29, 2007 at 3:41 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the relay its in the underhood fuse block-test the coil and switch side of the relay.

The coil side should read atleast 40 to 80 ohms and the switch should be infinity meaning no reading-if its has a reading it means its shorted out. and when its shorted out it will constantly past power.

Also the computer energizes the relay you might want to look into it.
Oct 29, 2007 at 8:57 PM
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