Hello,

I have a 1998 e320 that runs great in cold or cool weather. But once the weather is 65 degrees or higher the car runs poorly. Could the coil or a computer modual be getting too hot? Any suggestions on what I should check and how to check the component is greatly appreciated.

Thanks,
Bill

Do a search for crank position sensor. Could be the problem. Easy fix.
Dan

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2012 E350 Bluetech