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A/C relay

Tiny
SLINKY46725
  • MEMBER
  • CHEVROLET BLAZER
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?
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Monday, October 29th, 2007 AT 10:41 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 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.
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Tuesday, October 30th, 2007 AT 3:57 AM

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