4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Bad Belt Tensioner?

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Old 06-27-2008, 11:11 AM
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TheMustangLoveR
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Default Bad Belt Tensioner?

Hey guys I tried searching this but the search apparently doesn't like me so I'm making this new tread:

Yesterday I was driving home and all of a sudde heard a tap/knocking come from the engine bay. I immediately pulled the car into a lot and checked it out...I gave it a bit of gas and sure enough the taps/knocks would vary directly with the rpm's..which made me almost have a heart-attack since I thought it was the engine.

Anyway on the last glance in the engine bay I noticed that the tapping sound was actually my belt tensioner. Every time I would hear the 'tap,' the belt tensioner would 'jump.' So I'm assuming that the noise is coming from the belt tensioner slapping up against the supercharger, but I havent had time to inspect it since the engine bay was hot as hell and I had to go out of town.

So...has anyone seen something like this? I still havent had a chance to really yank on the belt to see if the tensioner is obviously no good but I'm wondering if this is an obvious sign of a bad tensioner?

By the way! Sitting in the engine bay was a VERY fine strip of the belt...apparently the very edge of the belt got chewed off.

Thanks for reading...thoughts?
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