After I replaced the parts My car still won't start.
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1993 Mercedes-Benz 300SE Question: Why does my car won't start after I changed the Fuel filter & fuel pump?
Answer #1HARTS November 14, 2011, 13:30Enthusiast
Well, what made you think those parts would fix your problem? What have you done to diagnose your car?
Replyrcrate12, November 14, 2011, 13:36Rookie
does the fuel pump has it's own computer that sends data to it? If so could that cause it not to start?
ReplyHARTS, November 14, 2011, 13:48Enthusiast
I think your mechanic is not knowledgeable enough to do the job.
There is a fuel pumps relay, I would check that. There is also fuse 13, a 30 amp fuse I would check. The relay gets it's power and ground from a LH Control Unit. If no power and ground to the relay, and the all wires are good, I would suspect the LH Control Unit. Do not use a test light to check for power and ground from the LH Control Unit, use of a test light may damage it. Use a High impedance DVOM.
Answer #2patrick mannion from Greg Solow's Engine Room, November 14, 2011, 22:50Master
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