Loud obnoxious whine from supercharger

**TheBeastGTP** · 11-12-2010

99 GTP
3.4 pulley and supporting mods

Just recently, expecially on cold morning startups my supercharger has got this growly whine-not the good kind. Kinda sounds like when your power steering pump is going. I probably need a new coupler eventually, but i dont think this is the problem. Its getting worse, i checked the supercharger oil and its a bit low. Could it be my bearings going out or what

. Please help, im thinking about pulling the belt off till if fix the problem. Damn, no boost is going to kill me

THANKS

**Fivefingerdeathpunch** · 11-12-2010

so you have a intake on the car right??

does it sound like the a shovel being dragged acrss the ground??

if so thats normal

**TheBeastGTP** · 11-12-2010

its not my intake, its a whine coming from supercharger. No scraping or clanking. I know what a bad coupler sounds like and the whine is louder than my intake now. You would think whine would be good, but this is so not good sounding.

**TheBeastGTP** · 11-12-2010

any body know whats up with this obnoxious whine, its getting worse

**nawarkk** · 11-12-2010

Does it sound like this?

YouTube - Weird engine noise.

That's mine.. I think the Needle bearings in the S/C are bad. Found out when I got the car that the oil has never been changed.

**blueguy** · 11-12-2010

^^MAFAKIN RIOT!! YOUR SIGNATURE LMAO!!!

Awesome.

Anywho...I voted needle bearings a long time ago on Nawar's car...I bet that's your issue.

**TheBeastGTP** · 11-12-2010

Originally Posted by nawarkk

Does it sound like this?

YouTube - Weird engine noise.

That's mine.. I think the Needle bearings in the S/C are bad. Found out when I got the car that the oil has never been changed.

No, that sounds more grinding in nature. Mine is more like a louder whine, really obnoxious like power steering goin bad coming from supercharger.

**Bio248** · 11-12-2010

have you for sure isolated it to the blower? taking the belt off makes the sound stop?

**GOTIT4CHEAP16** · 12-17-2010

Does it sound more like this???

YouTube - scream of death?

Thats the noise i recently just started getting and its a once i a while thing. Ive been searching and reading all over the place and many are saying it could be a blocked PCV Valve or something but definitely pcv related.

**matt5112** · 12-17-2010

So replace the PCV valve? wtf?

Thread is also kinda old.........

**GOTIT4CHEAP16** · 12-18-2010

You think it could be the pcv valve??

**matt5112** · 12-18-2010

Well first step is to take the blower belt off and see if it goes away.

If people say it could be the PCV then take the valve out and shake it. If it rattles its prolly good.

**cca** · 03-23-2011

so did the beast ever find the exact issue?I have the same problem.

**blueguy** · 03-23-2011

I recently had this issue and thought it was a million other things before I bought a new PCV valve or if you installed a VC breather...my noise went away.

**cca** · 03-25-2011

I did remove the belt and the whine went away.The whine sounds like its coming from the pulley on the blower.I will change out the pcv, cheap enough.I contacted magneson about a rebuilt snout and they dont have any available.Any hep will be appreciated.Thanks

**matt5112** · 03-26-2011

zzp has lots of rebuilt stuff for our cars.

its very expensive though.

are you sure it has fluid?

**blueguy** · 03-26-2011

I'd NEVER spend that kind of money on an M90 snout...evah

**matt5112** · 03-26-2011

hydralic press + get the parts yourself and you're in business.

**98gtp** · 03-26-2011

Did you replace the supercharger belt when you replaced the pulley?

667 - GTP/GS/SS supercharged with stock 3.8" pulley (67 1/4" -1708mm)
658 - GTP/GS/SS supercharged with 3.2 - 3.5" pulley (66 3/8" - 1687mm)

difference in length ( 7/8" - 21mm )

With an old belt, the extra slack + reduced contact on the s/c pulley the belt could easily be slipping on cold startup. Just want to confirm it is not the belt before throwing money at the snout.

(I have a newer oem belt on a 3.5" and it will occationally squeak at startup.)

**cca** · 03-27-2011

The belt is new as of two months ago.Its a Gates belt. The pulley is stock and I have not replaced the pulley.I did change the oil in the blower as soon as this noise began and yes there was oil in it.Smells horrible, new or old.Dont get any on you,it stays with you all day. If rebuilding the snout is possible myself does anyone have a source for the parts?I do have a press and a fair amount of ability But my alldata just covers blower replacement not rebuild.

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