Wobble at certain speed
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Wobble at certain speed
I have a 05 f250 lariat crew cab 6.0 that has a wobble at 45 mph when driving and braking otherwise runs smooth. I checked the front axle and everything is solid and tight. drive shaft has no play in it. even rotated the tires the front had some mild feathering. Will an alignment make this better.
Post Fiend
Joined: Oct 2002
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A 'wobble' ? How may miles on your truck ?
Not sure what you mean yet...
but maybe like the ball joints may be going ?
the lug nuts ?
the toe in MAYBE ?
is it consistent or bump/jounce related like steering damper ?
just trying to give a vague answer for now
Not sure what you mean yet...
but maybe like the ball joints may be going ?
the lug nuts ?
the toe in MAYBE ?
is it consistent or bump/jounce related like steering damper ?
just trying to give a vague answer for now
Elder User
Joined: Jun 2008
Posts: 724
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From: Sarasota, fl
I have an 03 250 Crew with long bed, and I've had the same symptoms before - well still have it some from the rear end at exactly 40mph. Tried to get rid of it, did some research, and I found that Ford was aware of this bouncing from rear end. If I good remember it has something to do with the long frame / 2 piece drive-shaft.
Shortly after that I installed a 4" lift on my truck, and it got worse, but the lift manufacturer mentioned, that with 2 piece drive-shaft you might have to use a spacer at the carrier bearing. I used an 1 1/2 inch spacer, and the bouncing disappeared, but every once in a while I can feel that it's still there, especially at braking...
Shortly after that I installed a 4" lift on my truck, and it got worse, but the lift manufacturer mentioned, that with 2 piece drive-shaft you might have to use a spacer at the carrier bearing. I used an 1 1/2 inch spacer, and the bouncing disappeared, but every once in a while I can feel that it's still there, especially at braking...
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New User
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The truck has 94000 miles on it. It is more of a bumping at the steering wheel and throughout the truck but only happens when i brake or hit 45 mph. I replaced the steering dampner and all the shocks and no help. Was going to take it to the dealership see what they can do.
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Had similar issues, maybe scope out the ball joints. I redid those, replaced steering stabilizer, realignment, drive shaft rebalanced, bought 2 new tires and rotated them...yeah, you guessed it, still happens but not as bad. Unusual though, only when it is super hot out, like 102F and above. I really think it goes back to the tires, 10 ply Michelin LTXs, which I have used for years on many of our vehicles without a problem. I still consider going back in to Discount Tires and try and work out a deal for another brand and give them a shot. It is not a catastrophic problem for me, so I kind of live with it, LIKE MANY THINGS ON THIS TRUCK...
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So pretty much a good inspection, alignment and beef up the stabilizer. I have a rancho single stabilizer and bilstein shocks all around. As for tires what is a good brand. Currently have BFG rugged trails on.
Senior User
Joined: Dec 2006
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From: Utah
I have the same issue but it only happens when I hit a bump at 45. Then you better grab on tight. I replaces all shocks, and tires, same as everyone else, it got better but still does it. I have heard Ford has a magic number for tow in on the alignment that really helps. As for the tires, I just put BFG KM2's on my 250. I ran the old style on several trucks and loved them. So far I have 3000 miles on them and have had them balanced twice and they still shake. Going back tomorrow to Discount.
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New User
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Thanks for all the replies. I am going to Ford in the morning for inspection and alignment. Will report when done. Is there a recommendation for replacing the steering stabilizer?
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Postmaster
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I would check the following for the problem: Ball Joints, Wheel Bearings, Rotors, and alignment. With over 70,000 miles on the clock, there is a good chance that the wheel bearings or ball joints are the source of the wobble. You didn't say whether you have 4x4 or not, but I'm suspecting it is a 4x4. The wheel bearing design is a stacked design that is pre-greased to hasten assembly at the factory. With the bearings being stacked instead of spread apart like on the 97 and older models, they are more easily damaged from road surface irregularities than the older design was. This creates enough wear on the rollers that some wobble can occur from the forces of the irregularity of the road surface. With the bearings stacked like they are it takes less leverage from side or angular forces to cause failure of the bearings to absorb road shock.
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