Mercedes-Benz SLK230 Problem Report

Mercedes-Benz SLK230 Check Engine Light and Engine Misfire

(9 reports)

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.

The engine started to misfire at times. After a cool-down it would again operate OK. The check engine light would illuminate. Checked with an OBII tester and it indicated a misfie on #3 cylinder. Pulled the coils from #2 & #3 cylinders. Checked them with an ohmmeter. #2 had radically different reading than #2. Got a new coil for #3 cylinder. Everything now seems OK. -
As described, MB dealer repairs - parts $740, labor $385 total $1,125. -
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