1995 Plymouth Acclaim AC compressor wont run.

Tiny
CASPER549
  • MEMBER
  • 1995 PLYMOUTH ACCLAIM
  • 200,000 MILES
After replacing cyl head ac comp wont run. If I jump the + wire on the ac relay it will run.I'm stumped. It was working before the head replacement and was cooling. I also checked the ground on left fender and cleaned it. Looked at the wires on the console switch assembly and am getting power there. Blower motor works inside.
Sunday, July 7th, 2013 AT 6:42 PM

3 Replies

Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
Check the a/c fuse and the a/crelay in the fuse box.
To check the relay, just swap it with another identical realy in the fuse box. If the a/c now works then repalce that relay.
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Sunday, July 7th, 2013 AT 7:18 PM
Tiny
CASPER549
  • MEMBER
  • 2 POSTS
I did that and same no run. When I jumped relay I did so on the small wire and she ran. The relay isnt getting power from inside the car. Heater ac Blower motor works. All fuses good
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Monday, July 8th, 2013 AT 3:44 AM
Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
This site (2carpros.com) has a really good article on how to check a relay. Read it, follow the steps to be sure that your relay is good (or not). Here's the address:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Also, you should connect a/c pressure manifold gauge set to the a/c to see if it has enough pressure to turn the compressor on. (a line could have been disconnected during the cylinder head work)
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Monday, July 8th, 2013 AT 8:32 AM

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