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Home >> Mercedes Benz >> 1987 >> 420SEL (126.035) V8-4.2L (116.965) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Oxygen Sensor >> Technical Service Bulletins >> Engine Cuts-Out, Cannot Be Restarted
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Engine Cuts-Out, Cannot Be Restarted

07.3-88041 Engine Cuts-Out, Cannot be Restarted All Vehicles with 4/88
Gasoline Engine

Cause:
Electrical wire of 02-Sensor comes at times into contact with drive shaft causing a short in the printed circuit board of the fuel pump relay.

Remedy
Replace 02-Sensor. Make sure electrical wire is properly routed.

Replace fuel pump relay.