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Loud hum/vibration on acceleration - Saab 95 Linear 2.3t

Recently started gettin this deep, low hum from the front end during moderate acceleration - right as the turbo is kicking in. If I hold it at that point the vibration persists through acceleration. If I give it more or less gas, or engage turbo, vibration subsides. Don't have it at high speed, coasting, hard acceleration, and doesn't appear as a result of turning left or right. Thought it was turbo related since it is only "just" as the turbo is starting to boost, but had it replaced 2 months ago and has been working fine and works fine when really pushed. Now thinking it might be a wheel bearing, but doesn't show the typical "coast at 55mph and turn wheel to hear/feel the issue". New tires about 15k ago too. Thanks for any help or suggestions!

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I have the same issue. I have a harmonic hum that appears to come from the rear of the vehicle but with a vibration through the floor board. I have a 2009, Saab, 95. Have had the wheel bearings replace and rotators. The noise was load when you pulled up on the emergy brake one level. Adjusted assembly but still have hum.

Posted on Oct 29, 2010

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I have the exact same issue. I can't seem to replicate it for the dealer and it is identical to what you are describing. PLEASE e-mail me if you figure it out or know anything. I want to get it fixed and it to go away! Thanks! Todd. Tm2200@aol.com

Posted on Dec 25, 2009

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