1999 ml320 129k it died on me a couple of times before, and it started back up again after a while, but not this last time. could it be fuel filter,fuel pump relay, or fuel pump? (fuel pump relay was getting very hot) any feedback will be greatly apreciated. Thanks

 

both the fuel pump relay and fuel pump tend to go bad

 

I bet a 6 pack its the crankshaft position sessor. good typicially to 100,000 miles. i replaced my fuel pump no diff. a CPS is about $80 online and a 2 minute fix if you read how to find and to remove the one bolt. torx head if i recall.

 

thanks a lot really do apreciate the input

 

thankyou I will try this one first!!!

 

Idling, stalling during acceleration and poor fuel mileage are some symptoms of malfunctioning fuel pump. Take it to a mechanic for checkup. Or you might be needing new mercedes fuel pump.