Question about 1999 Mercury Cougar

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Heater not getting hot!

We have put new thermosate and new heater core, and the heater just gets warm not hot like its suppose to. and the car does not over heat.

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Could be one of many things, first check your antifreeze concentration,s/b 50/50 mix,my sis had the same problem, she used straight anti freeze, need water to hold heat.

Posted on Nov 20, 2008

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