Rotational Bearing noise coming from front of motor - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 08-22-2008
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Rotational Bearing noise coming from front of motor

Hey guys i a 1998 4.0 ohv and there seems to be a kind of rotational bearing noise coming from the front of my motor. It kind of sounds like there is a bearing that is wearing out. Now it only seems to be at idle, whenever I rev it up, the noise goes away.
there is about 160,000 km, or about 100,000 mile on the odo if that helps.
thanks
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Old 08-22-2008
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Waterpump maybe?
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Old 08-23-2008
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More than likely it's the tension pulley. Usually if the water pump bearing was going bad it would start to leak.
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Old 08-23-2008
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Check the idler pulley, & tensioner pulley, then if these are ok, then reolace the serpentine belt, just did mine and before I did, it sounded like a bearing, Turned out it was the belt making the noise.
Jim
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Old 08-30-2008
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UPDATE

It was the tensioner pulley, thank god nice an easy
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