Mercury Cougar
Ford Expedition XLT
Combustion Engines

Why does your 2000 Merucry Cougar's engine sputter at idle?

Answer

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Wiki User
02/19/2007

Possibly needs idle air control, map sensor, possible vaccum or vaccum hose leak-more likely later of the two. Need fuel injection cleaner-Lucas is the best. May need tune up, try different brand of gas or premium.