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 Loud belt noise upon acceleration
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mrpicky
Senior Member

123 Posts

Posted - 10/04/2018 :  11:40:02 AM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Hello, working on an 05 IC RE Bus DT 466. Problem is that every time you accelerate the bus squeals like a loose belt. Take foot off of pedal and it goes away. It does not squeal at idle upon acceleration. Changed belt and one idler pulley bearings and still does the same thing. Tested all other pulleys and didnt find any problems. Belt is on tight and tensioner seems to be fine. Am I missing anything?

Trailboss
Senior Member

United States
196 Posts

Posted - 10/04/2018 :  12:24:28 PM  Show Profile  Reply with Quote
Just becaues it happened to us check your exhaust bolts to see if they are tight. We had an exhaust bolt broken sounded like a belt squealing.We did all that you did and replaced the bolt and all was good.
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Cal Mc
Advanced Member

303 Posts

Posted - 10/04/2018 :  1:06:02 PM  Show Profile  Visit Cal Mc's Homepage  Reply with Quote
We have had NEW belt tensioners fail and give us the same problem
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eddo
Advanced Member

USA
312 Posts

Posted - 10/04/2018 :  1:29:09 PM  Show Profile  Reply with Quote
yep, I'd replace the tensioner.
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mrpicky
Senior Member

123 Posts

Posted - 10/05/2018 :  07:22:28 AM  Show Profile  Visit mrpicky's Homepage  Reply with Quote
Turns out that it was a turbo mounting gasket. It had burned through and the exhaust leak resulted in a belt squealing sound when applying acceleration. A check of the records shows this has happened before. Is there anything I could do to stop this gasket from blowing out? Or is this a problem elsewhere in the exhaust system? Thanks for the replies.
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