Question about 2005 Ford F-150

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Noise and vibration above 50 mph

Low level hum and vibration occurs at about 50 mph and up. It almost sounds and feels like an interrrupted tread tire but the truck has highway treads. When I veer to the left, the hum increases and when I veer right it diminshes slightly. Also sounds like gear hum. Truck is 4x4, has 55k, new brakes. Tires have been rotated and balanced with no change.

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A wheel bearing changes as pressure is applied. as they get looser it wheel cause vibration like a tire out of balance

Posted on Nov 30, 2012

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2002 F150

Went crazy same situation, torque converter.

Bob

Posted on Apr 26, 2009

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You might have the wheel alignment checked

Posted on Jan 25, 2009

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Sounds like front differential or front drive axle issues. Check the front differential gear oil then take er' to the dealership before you end up spending a bunch of $. Most people change their oil frequently in the engine but forget about flushing the transmission fluid and changing oil in the front and rear differentials. I have three Ford 4X4s. Two which really get used hard. The 93 has 311K miles and still runs excellent. Trans and differentials get a fluid change every 25K miles and moble one synthetic engine oil changes every 5k miles.

Posted on Jan 25, 2009

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Tires would be the 1st place to check. If you seem to feel it more in your legs then it is likely the front, if felt more in seat bottom then could be a rear tire. Depending on how severe the vibration is there could be a tire developing a tread seperation and should be checked right away. A simple balance of the tire and wheel assemblies may be all that required also but when on a balancer they should be able to tell if the tire has a more severe problem.
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