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I have a strange vibration when towing

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Old 04-04-2004, 06:39 PM
  #11
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had a problem myself recently.

(truck) noisy rear end

yours sounds different though.
 
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Old 04-04-2004, 06:55 PM
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a u joint would do it when releasing the pedal after acelerating like the neutral zone. chcke the lug nuts on the trailer tires, check and make sure the trailer hubs are tight enough with a little rolling friction on them.
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Old 04-04-2004, 06:59 PM
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I think I'll replace my U joints this week, I do have almost 159K miles on her.
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Old 04-04-2004, 07:10 PM
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on-off vibrations are usually high RPM like engine, flywheel, torque converter, However if he has low gearing in that Bronco then I would check drive shaft alignment. If it were a U-Joint it would be vibrating with or without a boat. If the boat is putting a lot of tounge weight it could be pushing the rear suspension down far enough for your driveshaft to be out of proper alignment. It sounds dumb but it is VERY important. Especially in raised off-roaders. I had a driveshaft vibration so bad once it broke the bellhousing on my Turbo 350 and turned whole transmission up-side-down.

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Old 04-04-2004, 07:15 PM
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Also if you do replace U-Joints BE SURE that if you get the ones with the grease fitting that you position that section of the u-joint with the fitting to be compressed and not spread. This is the MOST COMMON mistake in installing u-joints and it is VERY IMPORTANT to keep them from failing. If you don't understand what I mean e-mail me and I will explain this in full detail.

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Old 04-04-2004, 11:07 PM
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Bearing buddies can be a pain. If they are cocked back and forth while installing or removing, the housing gets distorted and loses it's fit, and comes off. They have to be installed /removed as straight on as possible.
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Old 04-10-2004, 08:22 PM
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BR,
You have two different problems here...
1. fix the bearing that is about to fail. Yes, the one that has spit out the bearing buddy, twice.
2. You have a lock up convertor. It's called torque convertor clutch shudder. Is really noticable with vehicles with automatic overdrive transmissions that tow in overdrive.
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Old 04-10-2004, 10:38 PM
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You are need to replace the U joints even if that is not your problem. They are past due.

Replace the bearing buddies and repack the bearing to save any problems this summer.

You should not tow in overdrive with your small truck.
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Old 04-11-2004, 07:38 AM
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Quote:
Originally posted by KCHOTBOAT
You should not tow in overdrive with your small truck.
I wasn't gonna say that out loud. BR already has "big truck envy"...
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Old 04-11-2004, 07:48 AM
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159K miles on her.



Change the U-Joints and while you are at it change the Diff Fluid.
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