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Old 10-06-2001, 06:20 AM
David C Klasse's Avatar
David C Klasse David C Klasse is offline
CheFrac is Back!
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Fuel Level Sender

I just had my lower control arm bushings replaced (THANK GOD!!), and they had to reconnect a gas tank support. But about the same time that the gas tank came a little loose, my fuel gauge was not reading properly.

Whenever I fill the tank, it goes to only 3/4 of the way. By the time it is at empty, the gauge is actually accurate again. Point is that the fuel gauge doesn't seem to be reading properly. My service advisor told me that if I wanted it fixed, I would need a new fuel sending unit, at a cost of about $250, and we agreed that it wouldn't be worth it.

I know that the C-class has a common problem with the sending unit where they can completely fail. Mine has not completely failed, though it's inaccurate. Is something dirty? ...causing a slightly miscalibrated reading? Is there anything I can clean or check to hopefully correct the problem?

Thanks in advance everyone.
2006 E350 w/ 155k miles (Daily Driver)

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!)
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