Steve27

I've searched on bing, this forum, and the fuse diagram in the car but can't find specifically where the fuel pump relay is located...the only thing I could find is something along the lines of, "in the trunk, on the side, toward the front of the car". The problem with that is there is only a vertical column of relays, so every relay fits that description.

The problem with the car is it just all of a sudden wouldn't start. No funny noises or strange occurances before that. It ran great, then bam, it just cranks and cranks, strongly, but won't run. I figure it has to be the fuel relay, because surely the fuel pump would have made some noises before it went out. BTW, the car has 64k miles and I did switch to E85 about 10 or 12 full tanks ago and only got the occasional stumble when cranking that is common of E85 with these cars and is mentioned in the owners manual.

I've read here about similar occurances and that it could be the relay, fuel pump, or God forbid, the EIS. If I can just locate the relay, I can start there. Thanks in advance for any help.

-Steve

Moviela

It is in cavity A on the rear SAM assembly, next to the fuses.

https://mbworld.org/forums/c-class-w...gram-w203.html

Steve27

Thanks for your help! It turned out to be the fuel pump. I ended up having my friend who owns an indie shop replace it with a OEM unit from the dealership (part cost $288) once I got too busy to fool with it. Fired right up and runs great now.