I have a 1991 300ce in pristine condition that will start and run for about 5 minutes, then stumbles shuts down. It will not restart until the following day. Have recent tune up, have spark as well as spark from the coil...please help as this is a summer car that I have been unable to drive yet this summer.

thanks in advance,
Antonino

When was the fuel filter replaced last? The engine in our 1992 300CE experienced a similar problem. Replacing the fuel filter resolved it. Fuel filter should be replaced every 60,000 miles.

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Fred Hoelzle

Dear Fred,

Thanks for responding. The filter was replaced 25K ago.

Hope this helps anyone who may be having the same problem. After replacing the OVP and Coolant Temperature Sensor, it turned out to be a faulty coil and green mold that had grown on the inside of the distributor and coil while the car sat this past winter in the garage. I did not at first check these two items as I had replaced them less than 2 months prior to taking the car off the road for the winter. Cleaned the distributor and rotor, replaced the coil and the car runs perfect. What a relief.

Antonino