I need help with a strange noise
10-29-2008, 01:46 PM
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1986 300E, 2004 Pontiac GTO
I need help with a strange noise
I just got my 1986 300E up and running, it has been sitting for about 10 years, and did not run for that period of time. I took it out of a garage flushed the engine put new ingectors in the engine and tires and the car was running, for about two days but then i started up the car last night and took it driving and after the car heated up a little a high pitched whistling noise started comming from the right side, toward the back. Im not sure what it is i thought it was the exaust but i dont think the exust runs down that side. Does anyone have any idea what the problem could be or any ideas things i could do to try and fix it
10-29-2008, 02:52 PM
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1994 E320 (current)
I just got my 1986 300E up and running, it has been sitting for about 10 years, and did not run for that period of time. I took it out of a garage flushed the engine put new ingectors in the engine and tires and the car was running, for about two days but then i started up the car last night and took it driving and after the car heated up a little a high pitched whistling noise started comming from the right side, toward the back. Im not sure what it is i thought it was the exaust but i dont think the exust runs down that side. Does anyone have any idea what the problem could be or any ideas things i could do to try and fix it
10-29-2008, 06:32 PM
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1986 300E, 2004 Pontiac GTO
the car doesnt make the noise when it first starts up, but after about 5 minutes of driving the noise starts and when the car is stopped it seams to get louder so Im not sure, but if it were the bearings wouldnt it only make that noise when running. Is there any place i can go and ask besides a dealer cause i dont want to pay their prices
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10-29-2008, 09:59 PM
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95' AMG SeeThreeSix
hmm if the noise was not coming from the back and rather the front I would say serpentine belt 
but other than that can you explain the noise with any other details? For example, sounds like a electric motor, grinding, etc? I'm also thinking your fuel pump could be whining, thats pretty much the only thing back there.
but other than that can you explain the noise with any other details? For example, sounds like a electric motor, grinding, etc? I'm also thinking your fuel pump could be whining, thats pretty much the only thing back there.
10-30-2008, 01:48 AM
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1986 300E, 2004 Pontiac GTO
well the noise is a consistent noise, when you rev the engine fthe noise does not increase but it makes the noise when it is driving or stoped
10-30-2008, 02:20 PM
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1986 300E, 2004 Pontiac GTO
thanks i found out the problem it was the fuel pump filter, i got it changed and the noise went away, it think it just got to dirty since the car was sitting
