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P0307 Diagnostic Trouble Code Discussion for August 2007

Cylinder 7 Misfire Detected


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Trouble Ticket Help Requests for DTC P0307
Help Request Posted
1997 Mercedes-Benz E420 4.2L Hesitation VIN: WDBJF72F7V
P0307: Misfiring of cylinder 7 damages TWC. Engine shaking badly at idle. Tested and replaced #7 ignition coil and idled fine. Found that on accel from stop there was no power until rpm's came up and then came in. Cleared previous codes and drove a number of drive cycles. There are no codes now. Install...
August 24, 2007