Car Problem Reports

Mercedes-Benz E420 Bad Spark Plug Wires/Ignition Coils May Cause Misfires and Possible CEL

Mercedes-Benz E420 Problem
4 Reports
Me Too

Model Year Affected: 1997

Average Mileage: 127,750 mi (98,000 mi - 157,500 mi)


Failed spark plug wires and/or ignition coils can cause intermittent misfires (rough running); the Check Engine Light may also illuminate. Diagnoses of the ignition system will be necessary to determine which components are at fault.

Ask a Question