kalkanabulgaria

Can someone help me with this strange noise my car is making because till now no one can find the problem.

Here is the vidio of it.
The noise is thin thin whining thing in the background. It happen between 1000-1500 revs and never on cold car. Till now haven't got any problems with this sound but it annoys me. I'm pretty sure something is wrong but 2 different very good mechanics in Bulgaria tell me this is fine. May be from the alternator or something like this. I dont believe to them so decide to ask you.


Thank you in advance, and sorry for my awful english.

kalkanabulgaria

Any suggestions ?

biker349

engine and tranny mounts.

kalkanabulgaria

If there is some problems with the mounts wouldn't there be some strange vibrations or sound when braking and accelerating, because there is none ?

biker349

no

Handalw211e55

Why would that be?

Handalw211e55

I replaced my front sway bar because it was the origin of noise, but in the process y was told my engine mounts where dead, they took them out but didnt have the part in stock and had to put them in again, right after that procedure the whining sound changed from being at start ups to permanent being worst around 1000 and 1800 rpm. The engine is basecally so low its resting on the sway bar.

I will get both mounts replaced and the tranny one as well, you think this will eliminate the permanent whine?

AMG 17GT

It's the pulsation dampener !!

I had exact whine.

AMG 17GT

Check below.

Handalw211e55

wow, didn't think of that possibility, thanks! i will check it out, but the whine i hear is clearly only between 1000 and 1900 rpm, and its just like a steering pump malfunction. could my engine being basically sitting on my sway bar create pressure on parts and having as a result that whine?

sloanbj

Time for a new motor!

ShieldCyber

fixed it??

geniushanbiao

It might be a little dumb to ask but what oil are you using in the engine and how often are you replacing it? Also are you checking oil level in between changes and how frequently do you check oil level?

viper43

X

o2almanza

There is a piece on the power steering pump Calle do the vibration dampener just replaced one on a 2011 cl63 amg that was making the same noise and it fixed it

dhurley

Yes the thread is 8 years old, but it sounds like the secondary air pump since it only happens on a cold engine.