Hello all, New to me Aston Martin DB9 Owner (2010). I like the car but I noticed one thing, when in paddle shift mode, many times I get an additional noise, like a vibration, as I am accelerating through 4000-4500 RPM. (I believe noise is coming from rear of vehicle?) It has that vibration noise and isn't as smooth as the rest of the acceleration. As I go higher up the band through 5000 and 6000 RPM it seems all smooth engine noise.

Perhaps it is more pronounced when I am slowly revving through 4000 and not as noticeable if accelerating through 4000 RPM quickly. Also, sometimes it revs smoothly and I don't notice it. Any other DB9 owners who have experienced this? Is this normal for the car? Perhaps motor Mount issue? (Car doesn't vibrate and is fine when at a stop light).

I just uploaded an audio clip tonight so you can hear what I'm trying to describe (grinding or vibrating noise). It is car revving when in park and you can hear the noise when revving up at 4000 RPM (just before the 5 second mark in clip) and it's more pronounced when engine RPM is decreasing back through that same 4000 RPM (just before the 7 second mark). Other times I rev it and the noise is faint/non existant at 4000 RPM so I'm a bit confused.

Audio clip link
https://files.fm/u/ekn5vdkzd9


Any assistance is appreciated! I am getting a diagnostic reader this coming week to scan it for any codes.

 

Anyone have any thoughts or experienced this? Again it's like a vibration and not as smooth when slowly accelerating from 4000-4500 rpm with in 1st or 2nd gear.

Thanks