Mercedes-Benz S320 Problem Report

Mercedes-Benz S320 Rough running motor/lack of power due to failed ignition coil packs/spark plug resistors

(9 reports)

Failed ignition coil packs or spark plug resistors can cause a rough running motor or lack of power.

i changed my coils and spark plugs and wires and engine light still on and car is mis firing -
slow take off and rough running motor -
Coil number 6 failed and was replaced - now at 117000, other 2 coils failed also -
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