Has anyone fixed this problem before? - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 12-25-2013, 05:02 PM Thread Starter
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Has anyone fixed this problem before?

I have a major oscillating vibration through the seats and steering wheel when I past 65 mph. When I past 60 mph I feel a rough vibration in the seat and steering. Then at 65 and beyond it turns into a heavy oscillation that shakes the inside of the truck seats through the body. It comes and goes. When it goes or "cancels" the truck runs as smooth as it could be. When it's bad it feels like it will vibrate you off the road. I have put new tires and rims, replaced and balanced the driveshaft, replaced the overload snubbers that sits on the overload spring. If I drive the truck 60mph and below it runs smooth. No problems. Soon as I get over 60 you can feel the vibration start. Help I'm getting real frustrated!
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post #2 of 8 Old 12-25-2013, 05:05 PM Thread Starter
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I also replaced upper and lower balljoint,steering box and the front stabilizer bushings.
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post #3 of 8 Old 12-25-2013, 05:06 PM Thread Starter
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I had added a rear sway bar from an f350 as well.
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post #4 of 8 Old 12-29-2013, 09:52 AM
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having the same issue with my ex at 70mph. im about to replace all the u joints in the front and rear drive shaft since the shake got worse after a bigger tire and lift install. since i replaced both wheel bearings, ball joints and tie rods are good, tires and rims new, new suspension and breaks the last thing is the drive shaft u joints. cheap to buy and easy to install yourself with a u joint tool from harbor freight. bought the tool for 30 bucks on sale i think.
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post #5 of 8 Old 12-30-2013, 10:53 AM
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I had the exact same problem.. My U joint was replaced and now its perfect.
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post #6 of 8 Old 01-05-2014, 12:04 PM Thread Starter
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I replace the u joints on my rear shaft before I had a balanced but I don't think the front driveshaft would cause any issue sends the front hub bearings is disconnected from the axle the front driveshaft does not rotatewhile driving in 2nd
drive
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post #7 of 8 Old 01-05-2014, 06:38 PM
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How are your rotors?

2000 Ford Excursion Limited 4x4 Diesel
2007 Jeep Wrangler unlimited on 1 tons & with 41.5" Pitbull Rockers
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post #8 of 8 Old 01-06-2014, 01:46 PM
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its the driveshaft, my brothers had the same thing. take it to a driveshaft place and let them take a look at the joints and maybe balance it. We ended up needing to buy a new one for his.

2001 Ford Excursion

06 LJ rubicon
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