My check engine light has been going off and on for about a week. I was sitting at a light two days ago and my car just turned off. It started right up with no problem. This morning I tried to start it up and it took three times. Its runs fine majority of the time but I think there is a slight difference in the acceleration. Anyone have a guess of what it might be before I take it over to Mercedes so they can knock my head off?

 

sounds like a crank sensor problem.

 

You know how much $$ were talkin about?

 

I believe they list for $90 at your local dealer. So it's probably $72 with the MBCA discount.

 

Do you agree that is the problem?

 

i had a crank sensor problem not too long ago. but my engine light never came on

 

MBCA MEMBERSHIP?

 

Crank sensor doesn't trigger the CEL, I'll bet it's a vacum leak somewhere....