You can test the crank sensor. It is the important one. Memory is fleeting me a bit but it should ohm out somewhere between 700-1200 ohms. The front sensor does nothing except provide info when the MB tech hooks it up to a special machine.

Sounds to me like you need an ignition tune up.


Please let us know how it turns out

__________________
Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2