Electrical Whine from rear - 98 C43
02-03-2008, 02:01 PM
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1998 C43 AMG
Electrical Whine from rear - 98 C43
Any advice guys, it sounds like its coming from the fuel pump, which I replaced but the sound is still there. Only starts when the car has been running for 5mins or so, then if you turn the engine off and just have the ignition on it stays. Car runs smoothly, I'm at a loss as to what it can be, its got fairly loud now. Any advice appreciated. Thanks!!
02-03-2008, 04:17 PM
#2
there are two fuel pumps if i'm not mistake, one in tank (under passenger rear seat i believe) and the other is under the car inline. if you replaced one the other still might be bad. if its not that maybe your fuel pressure regulator is going bad causing the pump to have to work harder than normal, that could be another culprit.
02-11-2008, 12:34 AM
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99C43 05C55 06slk55
I had a car with that noise it was the fuel filter, remove the vaccum line from the fuel presser regulater (on the fuel filter) if the noise stops you have found the problem.
