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Hello to all. I'm the new kid on the block ok old man on the block. I've purchased a Z4 2003 3.0 130k auto So far I've replaced the Disa valve, cleaned the idle control valve, and waiting for a crankcase breather hose. At and only at 1750 rpm there is a vibration noise coming from behind engine only under power will not do it in neutral. Sounds like a really mad bumblebee. Any help would be appreciated.

Welcome!

May be difficult but try to record the sound

If it’s under load in that area it may be clutch/flywheel related but hard to say without hearing it

I have an automatic.

I’ve had head shields work loose and corrode before

That’s worth a look especially at the one that sits drivers side (uk rhd car) side

I'm not sure what a head shield is. Were is this located on the driver side?

You can’t miss it

It’s a bright silver aluminium shield that sits on the side of the engine where the exhausts are- check that’s not loose?

Were left drive here in usa I'll check it thanks.

mtb50 wrote: ↑Mon Jan 02, 2023 5:18 pm I'm not sure what a head shield is.

Think it was meant to read heat shield

If anyone has had this problem this is what I found. I replaced the passenger moter mount and no more noise.