C32 AMG, C55 AMG (W203) 2001 - 2007

CPMS/Fuel Pump Symptoms?

Old 11-10-2010, 08:19 PM
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C55 ///AMG, 535xi
CPMS/Fuel Pump Symptoms?

Hey guys,

I think my CPMS or Fuel Pump officially gave in.

My CEL came on today, I haven't cranked up the car since monday. The car sounds abnormal, it sounds a bit deep in terms off rev.

To the guys who experience such issues, what were the symptoms?

I'm gonna give up on the car.
Old 11-11-2010, 12:28 AM
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if your fuel pump took a **** you wont hear it prime when you turn the key on and the fuel pump wont throw a code. cps will throw a code after so many cycles.
Old 11-11-2010, 01:38 AM
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03 g35 coupe...........02 c32 Sold
i agree, its probably cps. Even a dying fuel pump is strong enough to start the car, you just run lean at the upper rpm.
Old 11-11-2010, 09:25 AM
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hmmmm it's prob the CPS then, hope I can crank up the car monday to bring it to my shop!
Old 02-21-2012, 09:24 AM
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sorry guys but am having trouble starting my car and i was running lean been a while ago....may i ask what is CPMS?
Old 03-27-2012, 10:15 PM
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oh, it wasnt the CPMS for me, it was actually the started, i changed it and its better than ever!

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