loud screach
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This is a discussion on loud screach within the Motorsports Talk forums, part of the Community - Meet other Enthusiasts category; sometimes right before i'm about to start reving before takeoff i hear a loud screach. it almost sounds like my ...

  1. #1
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    loud screach

    sometimes right before i'm about to start reving before takeoff i hear a loud screach. it almost sounds like my wastegate scraping but its from the other side of the engine compartment. i've tried everything i can possibly think. any help would be appreciated.

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  3. #2
    Moderator YBNormal07's Avatar
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    So your car is at idle when this happens? "Right before you start revving". No throttle action? Any clutch action?

    If it on the opposite side as the turbo, the only moving external parts would be a belt/follower, etc. Maybe a clutch, but if it loud and screeching, who knows for sure. Need more information. Just when racing, etc.
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  4. #3
    Buzzz Wannabe's Avatar
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    It sounds like a simple belt squeel to me. That is right in the rpm bands that they tend to do that. [If it is, then the rest of the story will help, if it is not the belt, then ignore the rest here.]
    You may have some part driven by that belt going away a little, and causing the belt slip. But lets address simple things before we go chasing that. Clean the belt to make sure no oil or grease is causing the initial slip. (Once it starts slipping, it takes more traction to stop it.) A little soap and water on what you can reach, (Belt and pullies), then start the engine and rinse it off with water while it is running. After it dries, it should stop. If it does not, you can grab a little belt dressing spray from your local auto parts place. If this stops it, then great, but you may want to figure getting a new belt before 5,000 miles or so.
    Try this and let us know how it goes.

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