Anyone have any idea what this noise might be? I'd describe it as 'whirring' and sounds like a belt idler or accessory bearing, but I've listened in the engine bay and doesn't seem to be coming from any of the obvious culprits like valvetrain, alternator, PS pump, etc. I can actually hear it best in the cabin, more noticeable in there than the engine bay. What's also interesting is that it's not there at idle, but kicks in at about 1700 RPM and then goes away again quite repeatably below that. Also disengaging the clutch has no effect, so definitely from the engine and nothing in the gearbox. Here's a video that will hopefully help. Any ideas of what to check? Thanks!
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I can't listen to the video as I am at work.
Is it your transmission? My Getrag makes the same noise. Been meaning to have it replaced.
Does it change with throttle load? Say you're at 1700 RPM cruising with about 15% throttle applied, once you go around 80-100% does the noise go away?20% Accurate
Morty: Well Summer maybe people that create things aren’t concerned with your delicate sensibilities you know? Maybe the species that communicate with each other through a filter of your comfort are less evolved that the ones that just communicate? Maybe your problems are your own to deal with and maybe the public giving a shit about your feelings is a one way ticket to extinction. -
Could be the waterpump nearing its end. Too vague to know though.
1991 325iS turbo
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Sure it's not a rattling heat shield/exhaust shield/other loose bit of metal? Or loose exhaust bolts? That's what it sounds like to me.Comment
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Louder inside the cabin normally points to driveline or exhaust. You said it does it with the clutch pressed in/out, so check for exhaust leaks.Comment
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I don't think it's your distributor...
heh
tnow, sometimes I just mess with people. It's more entertaining that way. george gravesComment
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