Sounds to me like a vacum leak or a bad mass air meter.

A crank position sensor will cause a no start problem with a warm engine.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".