Underdrive pulleys

suprajay79 · February 14th, 2008, 08:15 AM

Howdy. I put BBK underdrive pulleys on my 2001 GT in May, and ever since I got the car back, it's had a real problem with a screeching noise. I'm not sure where exactly it comes from (A/C compressor, maybe?), but I know that it only does it when I have some sort of HVAC going. Any suggestions?

99blkcobra · February 14th, 2008, 08:22 AM

but i little bit of oil on it every time it makes the noise, than it will stop

suprajay79 · February 15th, 2008, 01:42 AM

I've heard dishwashing liquid works, but I'm not too sure about the validity of it... you mean like regular engine oil?

workinprogress · February 15th, 2008, 01:55 AM

diswashing liquid does work, but it will eventually dry out the belt....there are a few companys that make belt dressing. best to fix the problem. what are the conditions that make the squeak...ie wot, turning, ac on, using brakes rev help us out here... if i had to guess i would say you have a belt slipping on a pulley.

suprajay79 · February 15th, 2008, 01:58 AM

Would getting a shorter belt help at all? Where can I get belt dressing? Thanks for the help!

workinprogress · February 15th, 2008, 02:01 AM

no prob thats what we are here for, i know autozone has it from stp...red and blue can, says not to use on serp belts but thats because it too can eventually dry out the belt...what makes it squeak?

Doc8224 · February 15th, 2008, 02:18 AM

How old is the belt? Also check the tensioner, and the belt tension.

workinprogress · February 15th, 2008, 02:22 AM

+1 ^^was getting to that, didnt want to rule anything out...i think he went to bed

Doc8224 · February 15th, 2008, 02:30 AM

He's a light weight. Can't pull all nighters.

workinprogress · February 15th, 2008, 02:36 AM

lol...im on here i swear to god 16 hours a day...i need a life...no wait, i have a stang and a girl that helps me do every modification to it...i have one

suprajay79 · February 15th, 2008, 05:33 AM

Not sure exactly where it comes from- I want to say it comes from the A/C compressor, just because it only does it when I have HVAC on. The belt, I would imagine, has been on the car since day one, and it has 72,XXX on it right now. And I have no clue how to check tension of the belt, what kind of deflection am I looking for? And the tensioner?

February 14th, 2008, 08:15 AM	#1
suprajay79 Regular 2001 Mustang GT 13.9 @ 100.7 Join Date: Jan 2008 Location: Mountain Home, Idaho Posts: 189	Underdrive pulleys Howdy. I put BBK underdrive pulleys on my 2001 GT in May, and ever since I got the car back, it's had a real problem with a screeching noise. I'm not sure where exactly it comes from (A/C compressor, maybe?), but I know that it only does it when I have some sort of HVAC going. Any suggestions?

February 14th, 2008, 08:22 AM	#2
99blkcobra Regular 1999 cobra Join Date: Sep 2007 Location: Las Vegas Posts: 248	but i little bit of oil on it every time it makes the noise, than it will stop __________________ weld flowmaster mgw shifter mac o/r h pipe 4.30(not installed) hypertech programmer steeda pullies jlt intake

February 15th, 2008, 02:18 AM	#7
Doc8224 Hardcore Enthusiast 2003 Mach 1 Join Date: Oct 2007 Location: N.W. Arkansas Posts: 2,227	How old is the belt? Also check the tensioner, and the belt tension. __________________ *Under Construction* *Project N/A 4V Under Way* *Rep is always welcome*

February 15th, 2008, 02:30 AM	#9
Doc8224 Hardcore Enthusiast 2003 Mach 1 Join Date: Oct 2007 Location: N.W. Arkansas Posts: 2,227	He's a light weight. Can't pull all nighters. __________________ *Under Construction* *Project N/A 4V Under Way* *Rep is always welcome*

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February 15th, 2008, 01:42 AM	#3
suprajay79 Regular 2001 Mustang GT 13.9 @ 100.7 Join Date: Jan 2008 Location: Mountain Home, Idaho Posts: 189	I've heard dishwashing liquid works, but I'm not too sure about the validity of it... you mean like regular engine oil?

February 15th, 2008, 01:58 AM	#5
suprajay79 Regular 2001 Mustang GT 13.9 @ 100.7 Join Date: Jan 2008 Location: Mountain Home, Idaho Posts: 189	Would getting a shorter belt help at all? Where can I get belt dressing? Thanks for the help!

February 15th, 2008, 05:33 AM	#11
suprajay79 Regular 2001 Mustang GT 13.9 @ 100.7 Join Date: Jan 2008 Location: Mountain Home, Idaho Posts: 189	Not sure exactly where it comes from- I want to say it comes from the A/C compressor, just because it only does it when I have HVAC on. The belt, I would imagine, has been on the car since day one, and it has 72,XXX on it right now. And I have no clue how to check tension of the belt, what kind of deflection am I looking for? And the tensioner?

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