Car whistles! - 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 03-19-2009, 07:42 PM   #1
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Default Car whistles!

When I put a certain amount of pressure on my accelerator during lower gears my car whistles, it has me baffled because it only happens when I'm going less than 45ish MPH. Anyone have any suggestions? If I hold the same pressure while it'* whistling it will continue to do so, until it changes gears than I have to release some of the pressure for it to do it again.
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Old 03-19-2009, 07:45 PM   #2
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Where does it sounds like the whistle is coming from? Engine bay, under car, outside, inside?

I have a whistle in mine..but that due to a header leak at the collector. GRRRRRRRR
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Old 03-19-2009, 07:48 PM   #3
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Could it be your intake? Check your filter.
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Old 03-19-2009, 08:09 PM   #4
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It'* not my air filter, it sounds like it'* coming from the engine though.
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Old 03-19-2009, 08:12 PM   #5
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A vacuum leak will tend to whistle more then a exhaust leak, but the exhaust can whistle as well.
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Old 03-19-2009, 08:14 PM   #6
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Why would it only happen at certain pressures of my foot on the accelerator and not at higher speeds..

Last edited by Razr89a; 03-19-2009 at 08:14 PM. Reason: typo
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Old 03-19-2009, 08:17 PM   #7
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If it'* just a small crack it may only open at certain amounts. You might have to wiggle the vacuum lines a bit.
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Old 03-19-2009, 08:19 PM   #8
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Where are they at, I've never had to mess with a vacuum line before.

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Old 03-19-2009, 08:27 PM   #9
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Old 03-19-2009, 08:30 PM   #10
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I don't have the L67, is it generally the same set up still?
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