engine misses at idle on 2002 Mercury Sable

engine missing at idle and up hills when going slow. no warning lights. has 109,000 miles what could it be?

by in Glenshaw, PA on September 20, 2010
1 answer
ANSWER by on September 20, 2010
Have you had your spark plugs replaced yet? Worn plugs can be the cause. Other ignition issues, such as a coil issue, coil boot issue (both for DOHC 3.0L V6 24V engine), ignition wires (3.0L V6 12V engine) can be the cause.
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Engine sometimes is ruff at idle. Missed and hesitate when driving up a hill. Ample supply of gas in tank. MPG has dropped from 19 to 16.

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