Just replaced the neutral switch. It fixed the problem of not starting in park. I took it for a drive on the freeway wand it started cutting out again like it has been, then stopped. Seems like it's very intermittent.

It seems to mostly happen right at the throttle position you use most for maintaining a normal speed. If you accelerate or decelerate, it runs fine. Possibly a worn throttle pedal position sensor?

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Brian Rogers
'96 E320 traded in at 292,000 miles
'09 C350