Sfcprez415

My s63 been in the shop for 2 month now. It started making noise only when it's fully warmed. The noise goes away when you step on the gas. So far I changed Idler pulley three of them belt tensioner belt. Harmonic balancer. Water pump and Alternator and it's still making the noise. Anyone have the same problem? https://youtu.be/623dOJwp3Lo

barryrobinson19

Have you tried spraying some silicone spray on the main drive belt to see if the noise go's away or changes?
Just something to try.

Sfcprez415

I replaced all the belts but I will give it a try thanks for the tip

johnksss

Speculations..... The A/C compressor bearing might be going out.

I only say this because I went through it on my 01.

Sfcprez415

I just ran the car without the v and it's was making that noise. Only when the car is super hot so it has nothing to do with a/c compressor.

johnksss

The "V"? Is this the same as you removing the serpentine belt and running the engine?

What about the fan?

I sure hope mine does not have this problem when it comes time for me to purchase it...

MannyEuro

Yes when making the noise try to remove the oil cap to find out if it has a lot of vacuum holding the cap down. If it does the problem might be because of a bad crankcase vent valve.