Loud Squealing noise from under the hood ekk

sjac9999 · February 4th, 2012, 08:17 PM

ok so with the belt off start the car, rev up no squeak then must be a puley?

86er · February 4th, 2012, 08:28 PM

yes, then you gotta go pulley by pulley to find the problem.

sjac9999 · February 4th, 2012, 08:42 PM

Could it possibly be my headunit? or the small pulley attached to it? the weird thing is, after i replaced the pulleys the noise went away until it started raining last night and today we sprayed some belt conditner on the belt and that just made it worce

N20zuki · February 4th, 2012, 08:44 PM

what kind of condition is the belt in? that would be step one to me... look at the ribbed side and see if its dry/glazed and cracking...

sjac9999 · February 4th, 2012, 08:50 PM

The belt is brand new, we put it on last sunday

bullitt02875 · February 5th, 2012, 03:24 AM

Sounds like the belt is your issue. Just take the blower off an start the car nothing bad will happen. Check all the pulleys for play and noise and throw the old belt on. If it doesn't make noise with the old belt then it's the new belt causing the noise.

Sent from my Autoguide iPhone app

sjac9999 · February 5th, 2012, 09:08 PM

Was the belt, put a smaller belt on, sounds smooth as new!

sjac9999 · February 6th, 2012, 06:59 PM

ok well new belt to tight? when we put the new belt on the tensioner was maxed out ant the tensioner houseing hits on my procharger headunit mounting bracket, anyone else have this issue?

Eagle2000GT · February 6th, 2012, 09:00 PM

If the belt squeals when the motor is cold and goes away when its warmed up, its usually a tensioner. Since you changed the tensioner it has to be something else. Are you sure you got all the spacers back in and the supercharger pulley is lined up?

By the way, I ran my car 6 weeks without the head unit when I sent it in to have the seals replaced. Even with superchargers our cars normally operate with a vacuum. The MAF, ECU and injectors are already calibrated to run without boost. It doesn't hurt anything.

Eagle2000GT · February 6th, 2012, 09:01 PM

Originally Posted by sjac9999

ok well new belt to tight? when we put the new belt on the tensioner was maxed out ant the tensioner houseing hits on my procharger headunit mounting bracket, anyone else have this issue?

You have to grind off the belt gaurd on the tensioner. If you don't it will hit the ProCharger bracket.

sjac9999 · February 6th, 2012, 09:23 PM

Originally Posted by Eagle2000GT

You have to grind off the belt gaurd on the tensioner. If you don't it will hit the ProCharger bracket.

Ohh ok so that will prob fix my issue! cause its wedged againt it now so when i rev up the tensioner cant move, so the belt slids on the crank pulley. hopefull cutting that lip off fix's that issue, now to fix my bypass valve humph car is just problem after problem haha

sjac9999 · February 19th, 2012, 01:10 AM

GRRRR!!!! alright so iv replaced the belt twice the tensioner pulley both idler pulleys and i still have the chirp under the hood! IM SO LOST AT THIS POINT!!! we put all the spacers back in the pulleys all lign up, i did notice that my procharger isnt clocked correctly, not sure how to make it right but i dont see that being the cause of my problem?

jivepepper · February 19th, 2012, 07:46 AM

Originally Posted by Eagle2000GT

If the belt squeals when the motor is cold and goes away when its warmed up, its usually a tensioner. Since you changed the tensioner it has to be something else. Are you sure you got all the spacers back in and the supercharger pulley is lined up?

By the way, I ran my car 6 weeks without the head unit when I sent it in to have the seals replaced. Even with superchargers our cars normally operate with a vacuum. The MAF, ECU and injectors are already calibrated to run without boost. It doesn't hurt anything.

Since I have an electric water pump I have drove about 15 mile back home one day when mine broke.

Originally Posted by sjac9999

GRRRR!!!! alright so iv replaced the belt twice the tensioner pulley both idler pulleys and i still have the chirp under the hood! IM SO LOST AT THIS POINT!!! we put all the spacers back in the pulleys all lign up, i did notice that my procharger isnt clocked correctly, not sure how to make it right but i dont see that being the cause of my problem?

I have had a bad alternator squeal on me. Did you ever start it with the belt off? Did you say the idler beside the SC is still the same? Mine is squealing right now when cold.

sjac9999 · February 20th, 2012, 01:33 AM

yeah i started the car w/o the belt and the noise is gone, i replaced both idlers the smooth and the groved one and the whole tensioner pulley... i put the smallest belt that we could get on with a pry bar... could the belt be to tight? doesnt sound like the altanator to me

sjac9999 · February 20th, 2012, 07:24 PM

Can someone post a pic of how the pulleys should be installed like which direction? and do they need to be torqed down or just bolt them as tight as possible?

Eagle2000GT · February 20th, 2012, 08:32 PM

What size belt are you running?

sjac9999 · February 20th, 2012, 09:08 PM

107 7/8's Gates # K061073

Eagle2000GT · February 21st, 2012, 01:07 AM

Well, I'm pretty much at a loss. I'm running a 108" belt. I've had pulley squeel because of the tensioner being bad. Like you described, a squeeling noise on cold start, then when you spray belt dressing on it, it gets worse. But that was the tensioner. When I watched it, it was bouncing up and down. It should be steady. It should hold the belt tight regardless of rpm.

86er · February 21st, 2012, 01:34 AM

Originally Posted by sjac9999

yeah i started the car w/o the belt and the noise is gone, i replaced both idlers the smooth and the groved one and the whole tensioner pulley... i put the smallest belt that we could get on with a pry bar... could the belt be to tight? doesnt sound like the altanator to me

Seriously? A pry bar to put a belt on? The proper belt will let you just slip it over the last pulley. Youve prob destroyed your tensioner. Do you change your oil with a pick axe and chisel?

sjac9999 · February 21st, 2012, 10:21 AM

Originally Posted by 86er

Seriously? A pry bar to put a belt on? The proper belt will let you just slip it over the last pulley. Youve prob destroyed your tensioner. Do you change your oil with a pick axe and chisel?

No but i dont have to change my oil 6 days in a row to make it not squeal... thought i was getting belt sliping so tighter belt...

February 4th, 2012, 08:28 PM	#22
86er I Post Entirely Way Too Much Join Date: Nov 2006 Location: Memphis, TN Posts: 7,630 iTrader: 0 reviews	yes, then you gotta go pulley by pulley to find the problem. __________________ Just a truck 5.4 3v: 264hp 317ft lbs rock stock The "search" button, its not just for porn piecing together the next project faster than your first sexual experience

February 4th, 2012, 08:44 PM	#24
N20zuki Regular 2004 Mustang GT Join Date: Dec 2011 Location: Elizabeth City, NC Posts: 84 iTrader: 0 reviews	what kind of condition is the belt in? that would be step one to me... look at the ribbed side and see if its dry/glazed and cracking... __________________ 2004 Mustang GT 40th Aniv 5spd, Stock for now. 2005 Joe Gibbs Silverado #0396 1986 Monte Carlo SS

February 5th, 2012, 03:24 AM	#26
bullitt02875 Regular 2001 Bullitt Join Date: Nov 2010 Location: Calgary, AB Posts: 108 iTrader: 0 reviews	Sounds like the belt is your issue. Just take the blower off an start the car nothing bad will happen. Check all the pulleys for play and noise and throw the old belt on. If it doesn't make noise with the old belt then it's the new belt causing the noise. Sent from my Autoguide iPhone app __________________ 01 DHG Bullitt Stroked, Forged & Blown Built Rear, Viper T56, Suspension, Drag Radials 374.6 rwhp 374.4rwtq @ 4.6L 10psi Now 5.1 and 15psi, no idea on the numbers!!

February 6th, 2012, 09:00 PM	#29
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,312 iTrader: 1 reviews	If the belt squeals when the motor is cold and goes away when its warmed up, its usually a tensioner. Since you changed the tensioner it has to be something else. Are you sure you got all the spacers back in and the supercharger pulley is lined up? By the way, I ran my car 6 weeks without the head unit when I sent it in to have the seals replaced. Even with superchargers our cars normally operate with a vacuum. The MAF, ECU and injectors are already calibrated to run without boost. It doesn't hurt anything. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

February 20th, 2012, 08:32 PM	#36
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,312 iTrader: 1 reviews	What size belt are you running? __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

February 4th, 2012, 08:17 PM	#21
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	ok so with the belt off start the car, rev up no squeak then must be a puley?

February 4th, 2012, 08:42 PM	#23
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	Could it possibly be my headunit? or the small pulley attached to it? the weird thing is, after i replaced the pulleys the noise went away until it started raining last night and today we sprayed some belt conditner on the belt and that just made it worce

February 4th, 2012, 08:50 PM	#25
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	The belt is brand new, we put it on last sunday

February 5th, 2012, 09:08 PM	#27
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	Was the belt, put a smaller belt on, sounds smooth as new!

February 6th, 2012, 06:59 PM	#28
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	ok well new belt to tight? when we put the new belt on the tensioner was maxed out ant the tensioner houseing hits on my procharger headunit mounting bracket, anyone else have this issue?

February 19th, 2012, 01:10 AM	#32
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	GRRRR!!!! alright so iv replaced the belt twice the tensioner pulley both idler pulleys and i still have the chirp under the hood! IM SO LOST AT THIS POINT!!! we put all the spacers back in the pulleys all lign up, i did notice that my procharger isnt clocked correctly, not sure how to make it right but i dont see that being the cause of my problem?

February 20th, 2012, 01:33 AM	#34
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	yeah i started the car w/o the belt and the noise is gone, i replaced both idlers the smooth and the groved one and the whole tensioner pulley... i put the smallest belt that we could get on with a pry bar... could the belt be to tight? doesnt sound like the altanator to me

February 20th, 2012, 07:24 PM	#35
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	Can someone post a pic of how the pulleys should be installed like which direction? and do they need to be torqed down or just bolt them as tight as possible?

February 20th, 2012, 09:08 PM	#37
sjac9999 Regular Join Date: Oct 2011 Posts: 150 iTrader: 0 reviews	107 7/8's Gates # K061073

February 21st, 2012, 01:07 AM	#38
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,312 iTrader: 1 reviews	Well, I'm pretty much at a loss. I'm running a 108" belt. I've had pulley squeel because of the tensioner being bad. Like you described, a squeeling noise on cold start, then when you spray belt dressing on it, it gets worse. But that was the tensioner. When I watched it, it was bouncing up and down. It should be steady. It should hold the belt tight regardless of rpm. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

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