Question about 2000 Mercury Cougar
I have replaced both coolant sensors replaced both relays and checked all of the fuses. My fans come on with the AC but not idling. Someone please help!
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Posted on Jan 02, 2017
My 1999 Cougar started running hot and I took it to my mechanic and he found that the water pump belt was broke. Replaced belt and all is well. Hope this help.
Posted on Feb 06, 2009
Please see in THIS ELECTRICAL SCHEMATIC...
Relay # k305 in the battery junction box controls the high speed fan
Relay #K309 in the battery junction box controls the low speed fan.
HOWEVER - if neither one is energizing the fan - it is highly unlikely both have failed at the same time.
Instead - the K163 PCM Power relay has likely failed... or the 40A fuse (f109)
Check ALL the fuses on the top of the page at or above the P93 battery junction box.
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Posted on Apr 29, 2009
SOURCE: 1997 mercury marquis ac & blower
you could have. Take a look and find out. If the lid/cover of the fusebox does not name the fuses and relay's check owners manual, find the fuse(s) and/or relay and check it out.
Relay can be tested in a few ways,
first, easiest way get a buddy to go in the vehicle and switch your AC on and off, find the relay and get in real close and listen and feel for the relay clicking as he turns it on and off, if the relay is clicking it is most likely working fine.
if you are unsure on relay working you can try this method: theres usually 2 switches one is normally closed one normally open. Using a multimeter and the electrical diagram that should be on the side of the relay itself you should be able to figure out which switch is normally open and which is normally closed. Look carefully sometimes the writing, labels and numbers are hard to see.
Another possible cause is that your temp sensor failed so the computer thinks its -40 degrees and therefor won't run the fan. check the temperature sensor wiring, and the sensor itself after you look at fuses and relay operation.
Hope this helps :)
Posted on May 08, 2009
Yes, it would be located in the fuse panel under the hood. If fuse panel is clean there should be a diagram with each properly identified. If only numbers refer to owners manual, the numbers will be identifed in that.
Posted on Aug 09, 2009
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