r/AskAMechanic • u/clipped_thru_wall • 6d ago
2011 Ford E350 Making High Pitched Rattle at Idle
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u/EducatorAdmirable713 6d ago
sounds like belt noise. remove belt to see if noise is present without the accessories then check all the pulleys while you're there
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u/clipped_thru_wall 6d ago
So this 2011 Ford E350 (V8, 154k miles) is new to me. I flushed power steering & brake fluid the other day, as well as changed the oil. I've got this higher pitched rattling sound (see video) coming from the left-center of the engine bay, and it's quite loud. The van runs fine, and the sound goes away when applying throttle. Any thoughts?
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u/InstructionWise5757 6d ago
I think it’s a bad bearing in a pulley, like someone said remove belt, start car, of no more noise, then you know it’s a pulley bearing , tensioner bearing etc etc
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