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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Vibration help

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Old Aug 24, 2013 | 02:04 PM
  #1  
nintey4f150's Avatar
nintey4f150
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From: south jersey
Exclamation Vibration help

Have a 94 f150. 351w with 4r70w. I have a vibration in the truck from the 1500-2000 rpm range. It only occurs when driving. Tires have been recently balanced so I don't believe that's the problem. The front end has been all redone ballpoints tie rods center links and alignment so I also believe that is good. Balancer was replaced a few months ago as well. I don't notice and play in the u joints. And a couple months ago the diff was replaced. This problem started about 2 weeks ago. If I put it in neutral while it vibrates driving it goes away.. Only does it when driving
 
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Old Aug 25, 2013 | 08:38 AM
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nintey4f150
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From: south jersey
Wow no one?
 
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Old Aug 25, 2013 | 06:17 PM
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MeanGreen460
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From: In Hastings Delton area
I would pull the rear driveshaft out check for a binding or frozen up u joint .they should move freely both ways
 
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Old Aug 25, 2013 | 09:19 PM
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From: Las Vegas
Do as MeanGreen suggested. How many miles on your vehicle? Your u-joints can still be bad even if they have no play in them. Did you check for play with the driveshaft disconnected? I had a vibration on my truck and the u-joints were tight, so tight that I had a heck of a time removing them from the yoke. When they finally broke loose it fell out in pieces of rusted metal. I replaced all u-joints along with center support bearing. Vibration dissapeared.
 
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Old Aug 25, 2013 | 10:19 PM
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timbersteel
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From: Mexico, Missouri
I vote u-joints as well.
 
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Old Aug 25, 2013 | 11:59 PM
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nintey4f150's Avatar
nintey4f150
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From: south jersey
Yes it was the u joints which I replaced earlier today. Thanks guys
 
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