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1988 Mercury Marquis 1988 Mercury A/C compressor wont turn

Tiny
P0ATMAN
  • MEMBER
  • 1988 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 88,000 MILES
When you turn on the a/c the compressor wont engage. The solenoids open to allow refigerent to circulate, fuses good. When I run power directly from battery to compressor it engages and it blows cold air so I know its charged. Its electrical obviously but my repair manual is not very descriptive, I thing its the a/c cutout relay but dont know where it is any help would be greatly appreciated.
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Saturday, April 11th, 2009 AT 8:09 PM

1 Reply

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
My sources don't give me a location for the ac relay. It should be in the junction block under the hood.


https://www.2carpros.com/forum/automotive_pictures/248092_4_11_20092028421_1.jpg



https://www.2carpros.com/forum/automotive_pictures/248092_4_11_20092033181_1.jpg


I attached both auto and manual diagrams not knowing which one you have.
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Saturday, April 11th, 2009 AT 8:39 PM

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