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#1
01-09-2013, 02:28 PM
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Serpintine belt keeps breaking?!
I have a 2005 Chevy Impala 3.4. In the past 3 months I have gone through 3 serpentine belts, 3 tension pullies and the belt keeps breaking. The pullies all seem to be ok but i replace them cause they are under warrenty. I notice the belt over hangs the tension pulley about 1/8 inch. When the belt breaks it breaks at the 1/8 overhang at the tread. The only other issue I experienced on the drive line is on 2 occasions in the past 7000 miles the tempetures gauge went over the normal mark. oh and yes it squeals but with a little dry hand soap rubbing on track of belt temporarily relieves the squeal. All suggestions welcome.
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#2
01-09-2013, 02:48 PM
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Re: Serpintine belt keeps breaking?!
I have a 2005 Chevy Impala 3.4. In the past 3 months I have gone through 3 serpentine belts, 3 tension pullies and the belt keeps breaking. The pullies all seem to be ok but i replace them cause they are under warrenty. I notice the belt over hangs the tension pulley about 1/8 inch. When the belt breaks it breaks at the 1/8 overhang at the tread.
And you wonder why you have a problem? If the belt overhangs by 1/8", then you have an alignment problem....one of the pulleys is not in alignment, probably because a bracket is out of whack, or the tensioner pulley you have replaced is the wrong one....
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#3
01-09-2013, 02:51 PM
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Re: Serpintine belt keeps breaking?!
How do I figure out which pulley is outta lined? The oem tensioner matches gm cross numbers so I m 99 percent it's the correct pulley. Thanks
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#4
01-09-2013, 05:41 PM
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Re: Serpintine belt keeps breaking?!
I saw a 3.1 have the water pump wrapped wrong- running it backwards but still not over heating - are you sure your belt is wrapped right? smooth pulleys run on back side (smooth) of belt- ribbed pulleys use inside of belt
__________________
Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles-
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#6
01-09-2013, 05:56 PM
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Re: Serpintine belt keeps breaking?!
Tech II is correct. You'll have to get in there with a straight edge across all pulleys,2 at a time to see which one is out of whack. With belt removed check all pulleys first for excessive in/ out movement. Then make sure all accesories are mounted correctly and perpendicular to the belts travel. Make sure all pulleys are in the same plane.
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