Mechanics

STRANGE NOISE FROM TURBO?

1998 Volvo XC70

Engine problem
1998 Volvo XC70 Engine Size unknown All Wheel Drive Automatic 118000 miles

I have a strange noise almost musical in nature, I thought maybe it was a clogged air cabin filter, but I replaced the filter and the problem hasn't resolved. It's almost a harmonic or symphonic sound that changes pitch as the car shifts gears, winding up to a crescendo before each gear shift. It lasts for aproximately 15 minutes and then when the car is warmed up it goes away. There is no other symptom besides this sound. The car occasionally sputters at a red light which is not a new problem. Any ideas? Thanks.

PS: the car has a 5 cylinder turbo charged engine
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Judafae
January 11, 2008.



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