Drivetrain whine
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Joined: Jul 2007
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Drivetrain whine
2003 King Ranch Supercrew 4x2, 5.4 L with 73K miles, completely stock. I just bought this truck a month or so ago and have noticed a slight whine in the drivetrain during normal driving when the engine is under a slight load as in climbing a hill in top gear or accelerating. When coasting, the noise goes away.
Is this a normal noise, or something I should check in to? It isn't loud, just loud enough to hear without the radio on. The faster the truck goes the higher the frequency of the whine. Any opinions?
Is this a normal noise, or something I should check in to? It isn't loud, just loud enough to hear without the radio on. The faster the truck goes the higher the frequency of the whine. Any opinions?
Hotshot
Joined: Jun 2003
Posts: 12,360
Likes: 4,394
From: SW VA
I would pull the rear differential cover and check the condition of the fluid, gears, and bearings. Check for large metal flakes/chunks laying in the bottom. With 73K on it, it's a good idea to change the fluid anyways...
Senior User
Joined: Aug 2005
Posts: 110
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From: Sacramento, CA
Ive had a simular problem with my expy. took the dealership 4 trys to properly align the gears to stop the whining. the ring and pinion was mis-aligned. i think im on the 4th set on ring an pinion gears. so go ahead and check the fluid and if u get a lot of metalic flakes coming out i hope ur still under warranty
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