Weird Squeeking noise, need advice

Brettnrs423 · 05-16-2008, 12:26 PM

Hi everyone,
I need help diagnosing a peculiar squeaking noise that seems to be coming from the crank pulley of the serpentine belt. Oddly, the crank pulley seems to wobble at idle, which is when I hear the noise(its like a pulsing squeak). Once you rev the engine slightly, the pulley straightens out and the noise stops. I pushed on the pulley and it doesn't seem to be loose, but maybe it is. Im hoping I may just need a new belt but it seems to be in good condition. I have 65000 miles on the car and my mods are in my sig. Aside from the squeak the car seems to run really well. Any thoughts or help is appreciated.

******Update*******
Well everyone get this. I diagnosed the problem to be a completely demolished stock crank pulley. Basically the outer pulley separated from the rubber harmonic damper portion, completely deforming the pulley. This obviously threw all the belts off alignment, causing the squeaking and ruining a couple of belts. I really dont know what caused this but I need to get a new crank pulley. I know that the stock pulley will dampen vibration, but quite frankly I didnt seem to hold up well. Anyone have any suggestions for aftermarket pulleys? Doesnt AR Fab make an aftermarket harmonic damper? Thanks.

Brettnrs423 · 05-17-2008, 09:45 AM

nobody????

SoflaSTI · 05-17-2008, 11:31 AM

well what time of pulley is it?

Edit: im guessing your pulley was install right. If it wasnt then you would have a world of problems. I would just check it to make sure its tight. Couldnt hurt

SoflaSTI · 05-17-2008, 11:32 AM

i just got my pulley installed and it does the same thing. My tuner said that the pulley is kind of glazed (shiny) and the belts might make some noise until it wears down a bit.

05-16-2008, 12:26 PM	#1
Brettnrs423 STI Driver Car: 04 Subaru WRX STi Fav Mod: SR55 Location: Connecticut Posts: 275 Join Date: Dec 2003 Trader Rating: (0)	Weird Squeeking noise, need advice Hi everyone, I need help diagnosing a peculiar squeaking noise that seems to be coming from the crank pulley of the serpentine belt. Oddly, the crank pulley seems to wobble at idle, which is when I hear the noise(its like a pulsing squeak). Once you rev the engine slightly, the pulley straightens out and the noise stops. I pushed on the pulley and it doesn't seem to be loose, but maybe it is. Im hoping I may just need a new belt but it seems to be in good condition. I have 65000 miles on the car and my mods are in my sig. Aside from the squeak the car seems to run really well. Any thoughts or help is appreciated. ****Update***** Well everyone get this. I diagnosed the problem to be a completely demolished stock crank pulley. Basically the outer pulley separated from the rubber harmonic damper portion, completely deforming the pulley. This obviously threw all the belts off alignment, causing the squeaking and ruining a couple of belts. I really dont know what caused this but I need to get a new crank pulley. I know that the stock pulley will dampen vibration, but quite frankly I didnt seem to hold up well. Anyone have any suggestions for aftermarket pulleys? Doesnt AR Fab make an aftermarket harmonic damper? Thanks. This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by Brettnrs423 : 05-25-2008 at 04:45 PM. Reason: Update!!

05-17-2008, 09:45 AM	#2
Brettnrs423 STI Driver Car: 04 Subaru WRX STi Fav Mod: SR55 Location: Connecticut Posts: 275 Join Date: Dec 2003 Trader Rating: (0)	Re: Weird Squeeking noise, need advice nobody????

05-17-2008, 11:31 AM	#3
SoflaSTI Senior STI Driver Car: 06 sti Fav Mod: tbe Location: Nap town, Fl Posts: 387 Join Date: Oct 2006 Trader Rating: (2)	Re: Weird Squeeking noise, need advice well what time of pulley is it? Edit: im guessing your pulley was install right. If it wasnt then you would have a world of problems. I would just check it to make sure its tight. Couldnt hurt

05-17-2008, 11:32 AM	#4
SoflaSTI Senior STI Driver Car: 06 sti Fav Mod: tbe Location: Nap town, Fl Posts: 387 Join Date: Oct 2006 Trader Rating: (2)	Re: Weird Squeeking noise, need advice i just got my pulley installed and it does the same thing. My tuner said that the pulley is kind of glazed (shiny) and the belts might make some noise until it wears down a bit. This ad is not endorsed by this member. Please register or login to hide this ad.