Question about 1991 Mercury Cougar

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Can you tell me where the thermostat is located in the engine compartment on a 1991 Mercury Cougar LS 6 cylinder 2 door coupe. Thanks!

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The thermostat is located under the gooseneck at the end of the engine side of the top radiator hose. After it is completely cooled off ,preferably after sitting all night you can release any pressure by removing the radiator cap. Then loosen the hose clamp at the goose neck and you will be able to see it inside. You will have to take out the two bolts in the neck to gain access to it. Remember you will need to drain some of the coolant into a drain pan from the lower radiator petcock beforehand. Also dont leave the coolant sitting as cats and other animals will drink it and die.

Posted on May 27, 2011

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