Hi!

I have a non-turbo 2006 Volvo s40. I had the timing belt replaced last year as well as he tensioner. There was a humming at idle for example when stopped at a stoplight while holding the brake which went away last year after replacing the timing belt and tensioner. Now there is a whirring noise when i accelerate even the slightest bit most noticeable when acceleration starts slowly from 0. Any help or ideas would be appreciated. Thanks!

 

does the noise happen only when in gear or do you hear it when you rev the engine in neutral?

 

It started off as a vibration in the front right engine area and now the noise is almost in synch and changes pitch when I accelerate and is most noticeable as soon as I touch the gas to about 25 MPH

 

The car is at a buddies whose looking at it, I'll let him know to try that