Drive shaft ? .55 mph or higher the truck wobbles on the floor

2005 FORD RANGER
75,000 MILES • 6 CYL • 4WD • AUTOMATIC
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RONALDMORGAN1
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This could go on forever but I'll try to make it short. When I drive the truck at speeds appx. 55 mph or higher the truck wobbles on the floor. The steering does not shake. I have had it to the dealer 4 times and this is what they have done so far. They have completed front and rear alignment. 4 brand new tires, total balance of all tires and now they say I need the drive shaft. Thanks.
Sep 2, 2008 at 8:40 AM
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KASEKENNY
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This does sound like a drive shaft especially if the issue seems to go away when you let off the accelerator.

What I would suggest is just removing the driveshaft and then drive it in 4WD to find out if the vibration goes away.

https://www.2carpros.com/articles/how-to-remove-a-drive-shaft

Below is the process from the manual on how to replace it. Please run through this material and let us know if there are questions. Thanks
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Jun 2, 2021 at 7:34 PM