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Would a noisy fuel pump change pitch?

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Old 02-27-2004, 08:34 AM
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Default Would a noisy fuel pump change pitch?
I'm trying to diagnose a whine I've had for about a year now. Mostly it occurs at highway speeds, partial throttle, no boost. It's a consistent whine - doesn't change pitch when the engine load is changed; I can't pinpoint the location. Cold weather seems to exacerbate the problem.
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Old 02-27-2004, 08:40 AM
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dont think it would change pitch
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Old 02-27-2004, 08:54 AM
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Default Are you sure it's not your differential? I have a similar whine that only occurs between 60 - 80 and
it stops at 70 MPH. It happens in every gear in that speed range. It's damned annoying. Let me know if you find the culprit. I'll track this thread.
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Old 02-27-2004, 08:55 AM
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Default If you want I can hold on to the bottom of your car while you drive around
should be able to diagnose the problem from there...
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Old 02-27-2004, 08:57 AM
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Do you have any plan to come to MD? I'd love to have you underneath my car. :-P
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Old 02-27-2004, 09:02 AM
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That just doesn't sound right ;-)
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Old 02-27-2004, 09:08 AM
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sure! I knew I installed those handles for a reason...
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Old 02-27-2004, 09:10 AM
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Default hmmm...I hadn't thought about the diff
wouldn't the whine change pitch with speed though?

Next time I'm out I'll notice what speeds the whine occurs.
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