Does E70 X5M intercooler makes noise?

[Maruzo]

I have this noise coming from the passenger side intercooler area. It's intermittent and sounds like metal knocking or bearing whining. When I took off the air filter and touches the intercooler, I can feel it vibrate as the noise continues on.

I was under the impression that intercooler consists of metal fins to cool intake air, and that there isn't any moving parts in it.

Maybe this is a turbo noise?

Not too sure but I'll take an audio recording of the noise once my new air filter comes in and I open up all the plastic bits again.

Just wondering if anybody's experienced this strange noise on an E70 V8.

It mostly comes after engine shut off after a good 30 minutes drive.

[Cyrix2k]

I guess it could be a vibration transmitted from the water pump or possibly some sort of restriction causing a noise?

[Maruzo]

Could be. But the sound is more akeen to metallic spinning. Not the good kind either. More like a metallic fan with a failed bearing. The noise comes and goes. And mostly happens after the car is switched off.

I'm going to try flushing the engine next week with Liqui Moly Engine flush, followed by fresh oil filter change, and then add an additive like Liqui Moly Ceratech.

Also starting next week, whenever I drive the X5, I'm going to do a 5 minute idle before shutting it down to allow oil to flow through the turbo parts.

Hopefully that'll help with the noise.

I sure hate to have to replace one of the turbos.

[Maruzo]

Here's a youtube video of the engine noise I uploaded today:

https://youtube.com/playlist?list=PL...PmlQl0pEsZ3yuk

Let me know what you guys think.

Thanks!

[Cyrix2k]

I don't think we have access to your video :-/

[ard]

You have a turbo cooling pump that will run after the car is shut off, I believe.

Is that what you are hearing?


(I can’t see the video either)

[Maruzo]

Thanks Ard. I’m still trying to figure out how to change my video from private to public.

But I’ll check up on this cooling pump!

[Maruzo]

Originally Posted by ard

You have a turbo cooling pump that will run after the car is shut off, I believe.

Is that what you are hearing?


(I can’t see the video either)

Thanks for the link ard. That is very helpful.

I found 3 aux water pumps that claims to fit my S63. But the pictures doesn't seem to fit that black part below the intercooler.

https://www.fcpeuro.com/products/bmw...mp-64119230233

https://www.fcpeuro.com/products/bmw...mp-64119197085

https://www.fcpeuro.com/products/bmw...x6-11517629917

Here's a photo of the engine. There seems to be a pump that attaches to the intercooler on the bottom of the picture.

[Maruzo]

https://static.nhtsa.gov/odi/rcl/201...8V248-8708.pdf

If the problem is with the same electronic auxiliary water pump, there's a recall bulletin that might help my X5.

Will bring it to the dealership and have them examine the issue first.

At least I can get a proper diagnostic before deciding to diy.

[ard]

Looks like you may have a few pumps (!)


Main coolant pump; turbo cooling pump AND an intercooler cooling pump (double !)


might be useful...


https://www.meeknet.co.uk/E64/09_Cooling%20Systems.pdf