1995 Plymouth Acclaim AC compressor wont run.

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.

3 Replies

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

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

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