Whine Noise after reving??




ALT clutch pulley
Inspect with a mirror if your engine is so equipped.
Whats your current mileage..?
A way out of this...
Upgrade to a plain regular pulley (or swap new ALT**) + new tensioner + idlers + serpentine.
The key item being the new tensioner: it's responsible of dishing out all belt troubles.
**: new ALT has fresh regulator brushes.
Cut off mileage to swap/keep ~ 50kMi.
Last edited by CaliBenzDriver; Mar 10, 2025 at 04:32 PM.
lol MB “will” put out another E that will match W212r ?
never. To each their own.
repair/maintenance scared you off. Simple, stop the bs.
Last edited by E63SAMG2014; Mar 13, 2025 at 04:46 PM.
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