my 2001 V70 base model w/auto trans, this weekend started a new noise. when accelerating slowley or starting to accelerate from a steady speed say 50 mph and slowly push on the throttle there is a deep "bwaaah" sound that goes away if i step on it or back off. I checked at the end of the exhaust by putting a gloved hand over it and found no leak.
This sounds to me like an air intake sound so i removed the air filter (K&N) and cleaned it for the first time in 40,000mi. I cant think of other things to check, any ideas?
thanks
Bobd
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