charcoal03silvy

iTrader: (1)

This started about 2 weeks ago when it started to really get cold here (oklahoma).. Had some small belt squeal issues before but a bit of tire shine or bar soap on the belt made it go away for months. Sometimes it squeals on me, other times it doesn't make a sound. Sometimes it only squeals when the engine is under load and gets quieter as I cruise or it idles. I've replaced belts, tensioner, idler pulley, and swapped alternators with another I had laying around. Nothing has fixed it. I can start the truck without a belt and there is no squeal. I have two different belts i'm using and it squeals with both of them on there. Last night, it threw the belt under a WOT pass at about 5500 rpm in second gear.

Only other thing I can think of is to pull the water pump pulley and put it back on to make sure its aligned right but it looks like there is a special tool needed.

I'm about to just set the truck on fire and drive it off a cliff I'm sure its something small that i'm missing, but I CANNOT find it.

TIM Z

iTrader: (12)

After reading you've about changed everything but the water pump and balancer , I'd think your water pump is the culprit.

charcoal03silvy

iTrader: (1)

[QUOTE=TIM Z;5054192]After reading you've about changed everything but the water pump and balancer , I'd think your water pump is the culprit.[/QOUTE]

I can touch a bar of soap to the ribs of the belt and the squeal goes away instantly for a little bit.

2000chevysilverado

iTrader: (11)

mine does this as well but only above 5k rpm and I drop voltage so sounds like you have narrowed down to pump try scuffing of the paint on the pulley sometimes that works

03sierraslt

iTrader: (22)

Are you putting the soap on the ribbed side or the flat side?

charcoal03silvy

iTrader: (1)

ribbed

03sierraslt

iTrader: (22)

Well that rules out the water pump pulley, run a straight edge off the crank pulley and see if any of them are out of alignment.

charcoal03silvy

iTrader: (1)

running a straight edge off the crank pulley, everything is flush except the P/S pump. its about 5mm out from the crank pulley. The lip on the front of the P/S pulley looks a little thicker than the rest of the pulley's though..

03sierraslt

iTrader: (22)

Ill try to remember and check tom. I can mic the spare set that I have and see what the offset is. I was thinking it was pretty close. 5mm is quite a bit.

charcoal03silvy

iTrader: (1)

visually, the P/S pump looks like its too far forward just a hair... looks like it take a special tool to take it off and press it back on.