Every time i put on a new accessory belt, it stays on and runs fine for about 24 hours, then splits in half and falls off. Whats up with this? Is it the idler pulley?
Don't sell your car to 16 year olds...
95 Eclipse RS - Sold for 6k, totalled three days later 91 Dodge Stealth R/T TT - 3" exhaust w/ no cats, eurethane motor mounts, 300M unbreakable output shaft, kevlar faced clutch, turbo XS BOV, 99 3000gt front conversion, carbon fiber hood. Dyno'd at 386hp. - SOLD! for 5k 98 Dodge Ram 1500 Club Cab 4x4 black on black.
#94327, "RE: PS/Idler/AC belt keeps shredding, help?" In response to Reply # 1
As stated above you might not have the crankpully all the way on or you could have a problem with one of the pullies, check the surfaces to make sure there isnt a reason the belt is shredding. Inaddition to that, make sure you are not overtightening the belt. overtightening will cause the belt to jump off the idler pulley and get shredded. Make sure the bearing in the idler pulley is not bad.
#94328, "RE: PS/Idler/AC belt keeps shredding, help?" In response to Reply # 2
I had the same problem. It was the crank pully, and the fact that the crank bolt threads were stripped not allowing the pully to be completely tightened down. I would recommend checking the bolt threads, then making sure that you heat the pully up before you install it. If heated up properly, and enough, the install should be smooth. make sure you tighten the pully down before it has a chance to cool too much, that way you get the best, most snug fit.
Built block. Refinished head. Tuned suspension. TURBO.
#94333, "RE: PS/Idler/AC belt keeps shredding, help?" In response to Reply # 3
Alright, i got everything torn apart, and the crank pulley was loose enough, that i could turn it about 1.25 turns until it was tight, and then added ANOTHER belt. WOuld that small amount of slack be enough to break the belts? Or is it probably something else? The pulley seems to be good, not loose or anything, and ive never tightened the belt too much. it seems pretty good.
Don't sell your car to 16 year olds...
95 Eclipse RS - Sold for 6k, totalled three days later 91 Dodge Stealth R/T TT - 3" exhaust w/ no cats, eurethane motor mounts, 300M unbreakable output shaft, kevlar faced clutch, turbo XS BOV, 99 3000gt front conversion, carbon fiber hood. Dyno'd at 386hp. - SOLD! for 5k 98 Dodge Ram 1500 Club Cab 4x4 black on black.
#94334, "RE: PS/Idler/AC belt keeps shredding, help?" In response to Reply # 4
There was a post a while ago (you'll have to search for it) about the tensioner bearing going bad, but you could get another one at McMaster-carr for a couple bucks. I remember posting about it a least 6 months ago.
If your pulley isn't the issue, your next step might be to check that. In addition, when you have the belt off, make sure all the pullies that it turns can turn freely. Something sticking or not rotating right could wreak havoc on a rubber belt.
Just a thought....
Brian
Red 97 Eclipse GS (420a) MTX Custom Garrett T3 Turbo system Megasquirt w/52 lb/hr injectors & a Walbro 255 Kicker/Alpine Audio (3 amps, 2 subs) 90 Cav 2.2 TBI auto (winter) <- yeah, it's fast
#94368, "RE: PS/Idler/AC belt keeps shredding, help?" In response to Reply # 5
Turns out it was the crank pulley, wasnt very loose, but loose enough, all fixed. Thanks guys, i appreciate the help!
Don't sell your car to 16 year olds...
95 Eclipse RS - Sold for 6k, totalled three days later 91 Dodge Stealth R/T TT - 3" exhaust w/ no cats, eurethane motor mounts, 300M unbreakable output shaft, kevlar faced clutch, turbo XS BOV, 99 3000gt front conversion, carbon fiber hood. Dyno'd at 386hp. - SOLD! for 5k 98 Dodge Ram 1500 Club Cab 4x4 black on black.
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Don't sell your car to 16 year olds... 
