w211 belt squeak when turn off engine

[mike75]

Hi. When very cold outside my w211 has a short squeak when turn off engine. I changed water pump, pulleys, belt. It doesn't make any noise on start up or idling. Only when I shut down engine. What could it be?

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[Twistedmind]

Might be a squeak from the engine mounts.

Did you swap all the idol pulleys ?? Ho about the belt tensioner ?

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[mike75]

New engine mounts and belt tensioner changed last year.

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[Bellow]

Is the belt tensioner sprung?

 

[BlackC55]

It's probably the alternator pulley.

 

[Mislav]

I also replaced all the pulleys, belt tensioner, water pump and engine mounts, but still hear the squeak. My opinion that is coming from steering pump. Soution, reparation of the pump, or new one. I'm gonna live with the squeak