Welcome - sounds like an oil pump in the gearbox, low fluid? Maybe time to have it checked.

Also, if you click on the top lefthand "userCP" and fill in your profile with model and year, we can be more specific.

Hope this helps.

 

Hi Sean ,


I have the same sound on acceleration.

Sometimes it sounds like rattling chains , but not loud.
My timing chains have been done a few months ago , hope it's not that

Someone any idea about this ?

 

popeye-
I assume you are familiar with the term "pinging" and it is not that?

 

It sure sounds like pinging from the description. One of my vehicles had a damaged cat that caused that, but did not result in a CEL until later. May just be function of fuel quality or carbon deposits, also.

 

@Ross

No , it is not pinging i think.

It's a metallic "chirping" sound , nice in sync with engine revs.
Starts on mild acceleration.

When passing a row off parked cars or a wall , the sound is more noticeable.
Then it sounds like slapping chains...

I hope it's something else , like the supercharger belt/tensioner (?)

 

Thats sounds like a good possibility.

 

Thanks for giving me hope

I will report back when i now more.