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Anonymous Posted on Dec 02, 2009
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How do i know if my thermostat is not working in my 1999 murcury cougar

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  • Posted on Dec 02, 2009
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After engine is warm be careful and feel the upper and lower coolant hose's they both should feel the same ( careful could be hot ) if only one is hot bad thermostat. Also feel the are blowing thur your radiator should feel warm to hot, if cold bad thermostat.Good luck

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