I think that my fuel relay might be bad. I just got my new Overvolt relay today, and put that in though.
Over the past few months, upon acceleration from a stop, my car, C280, will kind of lurch once or twice, like fuel is being cut off. That is the only thing I can think of, fuel not getting to engine. The fuel filter was recently replaced, as the Overvolt Relay. Maybe the problem could be cured now that I have the new OV Relay?
Is this a common symptom of a bad fuel relay? I did the search and know that it's a common problem, but couldn't determine if that is my problem. Maybe Overvolt relay will cure it. Hasn't done it since I changed it, though I only drove about 10 miles, and it usually happens about once a week.

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)