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V-Belt torn twice in a week


Old 09-16-2018, 01:57 PM
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Default V-Belt torn twice in a week

Hello fellas,

keeping it short.
My 2008 CTT has been in the garage for a month replacing both Turbos, valve cover gaskets, blow off valves, coils, and every fluid including PDCC reservoir. Shop is super experienced and the Job they did is superb apart from 1 thing.
When I went to pick up the car the V-belt was torn between the 3rd and 4th line. Shop was shocked, left it there and they replaced it. Picked up the car on Wednesday, after a small trip and back around 75 miles I parked the car in the garage.

Today I wanted to take it for a ride again and once I cold started same noise as the first time the belt was torn. I am sure that the belt is torn again although due the limited space I canĺt see evidence.

any thoughts what might be the culprit?
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Old 09-16-2018, 09:37 PM
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Chances are a pully has been damaged or the idler is shot.
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Old 09-17-2018, 12:17 PM
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Originally Posted by deilenberger View Post
Chances are a pully has been damaged or the idler is shot.
...or the tensioner has a problem and is allowing some slack in the belt either upon initial motion or when it needs to spin quickly. Could also be that the alignment of a pulley or roller is not quite right (usually from bearing wear) and is allowing the belt tracking to move and contact something.
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Old 09-17-2018, 12:27 PM
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Why are you replacing both turbos? Just curios as I've read on here that they never go bad....
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