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The mkiv Supra Owners Club

Is this a tensioner pully? Mines is rattling!


hoff
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Could anyone confirm that the pully above the crank pully is the crank pully tensioner? Its the little one above the crank pully in the pick (ignor the arrow).

 

Mine has developed a rattle on start up. Could be a bearing, though when the car has warmed up the rattle stops. Does anyone have an idea what it could be. Also what is the likely outcome if it fails? I assume a knackered engine.

FEADdrive.jpg

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I doubt a noisy bearing could cause any major damage in that scenario.

 

The worst possible case is the auxillary belt comes off, but I can't see how a noisy bearing could cause that, I could understand if the tensioner itself wasn't working (ie not keeping the belt to it's correct tension).

 

In the worst possible case if the belt came off, you would loose power steering, air con & water pump & alternator charge, so the biggie there is water temps shooting up.

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