engine missing at idle and up hills when going slow. no warning lights. has 109,000 miles what could it be?
engine misses at idle on 2002 Mercury Sable
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.