We have a 2002 S60 Volvo(not turbo charged) that makes a whistling(sucking)noise on 2002 Volvo S60

We have seen a fix for a turbo charged Volvo, but this car is not turbo charged. The other fix was for the PCV valve. Please help

by in Lafayette, LA on February 25, 2014
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1 answer
ANSWER by , February 25, 2014
Vacuum leak someplace. Have it smoked or mechanic check it.