Noise at specific speeds, sounds like tire noise but isn't? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-24-2006, 05:39 PM   #11
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Bill...original fuel pump?
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Old 04-24-2006, 05:48 PM   #12
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Quote:
Originally Posted by BillBoost37
Bill...original fuel pump?
I don't know if the fuel pump is original, but I assume that it is. I bought the car with 114,000 miles (it has 179,000 now), and it has the stumbling problem when making right turns while 1/4 tank of fuel or less. I have a new OEM fuel pump and sock sitting in the garage, but don't want to go through the "fun" of dropping the tank and replacing the pump and sock until I have to...
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Old 04-24-2006, 05:51 PM   #13
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I'd run it pretty dry (I did 1/2 gallon) and drop it out. Do it up and pick yourself up a set of straps first. You'll probably cut them.

maybe that'* the issue.
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Old 04-25-2006, 02:13 AM   #14
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this is what I have always done to isolate wheel bearing noise:
Driving at those speeds, will the noise change if you put more of a sideload on the rear wheels? i.e. going around a corner. I noticed with every one of my wheel bearing failures (or uneven wear) that the humming whould increase or decrease, sometimes stopping, when I put a large enough sideload on the wheel.
Might also be worth it to check for hardened or worn control arm or strut bushings that could be transferring normal vibration through.
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