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does the idler pulley on a 1994 mercury cougar do anything besides route the belt?

April 26, 2017BELT Cougar idler mercury pulley route

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does the idler pulley on a 1994 mercury cougar do anything besides route the belt?

1 Answer

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10 Posted

The idler pulley is not attached to any internal engine parts. It’s job is to route the belt and to make sure the belt gets sufficient friction on the pulleys (it make it wrap around more if the outer surface of the pulley for more “traction”) It is necessary, but it is just a pulley and a bearing.