Question about 1999 Mercury Cougar

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My 1997 mercury cougar is running on the VERY high side of hot

It does not completely over heat, but does get what I think is to hot. I have changed the thermostat, to no effect. There is no steam coming out of the tail pipe. I was told that steam coming out of the tail pipe means I may need head gaskets, Will flushing the rad, help

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Check to see that the electric fans are turning on when they are supposed to, and make sure the coolant is full and that the rad cap is good. Bad radiator caps are one of the most common overheating causes

Posted on Jun 21, 2009

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I have a 99 Mercury Cougar 2.5 v6. I have only reverse. No forward gears. It's an automatic transmission


check the fluid condition/ex. full level/rose pink/red color is good if it's brown it's burning this could be from slipping/ improper cooling from hot running engine(the tranny lines go through the radiator)broken vacuum line/pressure loss dirty electrical connectors/blown switches inside the tranny/or the tranny is completely shot==this all depends on what you find if your engine has been running rough for a while your loosing vacuum inches and proper voltage and this will contribute to ruining a transmission in a short time also high heat /hot running engine == old transmission===I'm fried out === junk yard transmission=$$and a lot of work / rebuilt transmission===$$$$$ and other repairs as needed to not burn the new one out in 6 months or less good luck

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Where is the ac low pressure side port on 1997 Cougar


Its on the Passenger side of the engine bay between the strut tower and the valve cover. It should have a blue cap on it, or maybe a black cap. Follow the ac line coming out of the back of the compressor and youll see it.

Apr 24, 2010 | 1997 Mercury Cougar XR7

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You have a vacuum leak. Check PCV hose on passenger rear of engine. Stuck open EGR valve can also be the cause.

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Same car, same problem. Finally fixed by changing out PCM (computer module behind passenger side kick panel). Car runs much better too.

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1 Answer

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