I recently purchased a used V70 R awd Wagon (with extended Volvo certified 100K warranty.

After a couple of weeks I was driving out in the county and heard a strange "metallic like rubbing on a shroud" type noise.

Upon hearing the noise (at 75 mph), I put car into neutral and revved motor which did not speed up noise. I put car back in gear and slowed to a stop. While rolling to a stop, the speed of the noise slowed down and stopped with my stop. Everytime I hear the noise I have tried to get the noise to respond; If I floor it after hearing the noise, the noise will go away as the car downshifts (automatic trans), and then return when the
trans reconnects to the previous speed/gear it wants at a given speed.

It is a metallic almost shrieking noise that can be heard better when windows are down. The noise will usually just go away after a minute or two, regardless of what I am doing ???

I am not a stranger to fast cars, turbo cars or high perf Euro cars;
I have owned S70 T-5, S80 T-6, Jeep SRT-8, Porsche Cayenne S, and (4) Porsche 911 turbos.
I recently (last week) sold my 0-300 km in 26 seconds, Protomotive 996 Twin turbo.

 

I'm not sure either, but did you think of putting the car on jackstands to listen or is the occurance totally random?

 

It is very random, but the next time it happens I will drive it to my friends lift.

Any other ideas ? Is there a metal shroud near the torque converter that spins only
when car is moving. Car has to be moving for the noise.

MK