Rabs

When revving the engine especially when cold or pulling off I get this squeaking sound, if you let throttle off then rev it generally goes. I have removed rear blower motor as thought it might be that. Any thoughts on what it could be?

I thought it could also be power steering but even when on full lock there is no noise.

Cold here at the moment and seems to be worse.

elbeee964

One of the two belts pictured is loose.
(My bet would be on the aft-most belt; it's looking 'wobbly' in that video.)
Regardless, that's belt slippage you're hearing.
FWIW, it's NOT the power steering belt. (That is buried at the front, right side of the engine. Nowhere near where you're hearing this. Besides, its a toothed belt and wouldn't make such slipping sounds.)

Suggest searching under "belt tightening", or in the DIY forum under such. It's not an overly complicated procedure.
Unfortunately, it DOES require a peculiar 12-pt (or "3-square") 10mm bit. More on that, here.

Rabs

Ok thanks will check the tension on the belt but it doesn't push in too much when the engine is not running. Was also thinking it could be the bearing in alternator/fan?

elbeee964

A bearing wouldn't be my first guess as such would change pitch/frequency with rpm change but not likely disappear, as here.
It's the belt slipping (not providing enough friction) on the pulley surface (than to spool up either fan or alternator from idle to higher rpm.)
It could be the belt's old and hard -- so otherwise acceptable belt taughtness doesn't provide enough friction now.
Belts are in the $5-$10 range. May be time to do a change anyways, since pulley disassembly is in the offing, regardless.

Bearings wouldn't be my first 'go-to' on this.

Rabs

Thanks, I will get a belt ordered

John McM

It definitely sounds like belt slip go me. You'll likely find the shaft becomes hot to touch with the friction generated heat.

Rabs

Thanks John

Here is another clip -

warmfuzzies

That's more reminiscent of a belt than a bearing, you'll need to do the shims to get the tension.

K

Spokes

I’m voting belt too

5hrine

Just had a similar issue, Started the car after a bit of a winter lay up and a noise was there for a while, then it went away, then back etc. Finally after a day or two the belt gave up and snapped. Luckily it was in my drive and I am now considering a RS single belt type set up. Well worth pulling the belts and replacing. I heard you should only use the genuine Porsche belts too