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  • 1 Post By CT Performance, Inc.
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  #1  
Old 11-30-2010, 06:55 PM
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Wits end

Yes, I have searched the forums a good deal but cant seem to make this right.

My truck, cannot, will not and has never been smooth, since I've had it atleast, for 2yrs and 50k now.

Start with what I've done and replaced.
Rotors x4
Pads x4 (Hawk)
Caliper x1
Sway links x2
Sway bushings x2
All 3 rear U-joints (Spicer)
Totally new Carrier Bearing
Tranny (BTS)
Front Hub (Left)
Ball joints x4
Sets of tires x2 (Currently Kumho KL78 315/70/16)
Rear driveshaft balanced (Twice)
New Bilsteins x4
Bilstein dual stabilizer
Various CB shims
Multiple different Alignments
Tires balanced more than once.

Probably more than that.

My wondering problem I believe I have down to the steering gear (200k truck)
It will just go whereever it wants, PITA to drive. All the Tie rod ends are tight, as well as pittman arm to draglink.
Thoughts on that?

Vibration, I am close to the end of the road.
Had a different shop today balance the driveshaft and do a front end alignment and its better but still has an annoying vibration. Very hard to describe, seems to come and go, but above 73 mph, it feels like its going to come apart. From 0-30, pretty smooth. above that its hit or miss. It has the 43-49mph shake everyother super duty has, but this one is worse. Then it seems to shake sometime and not, nothing predictable. When I am braking it vibrates pretty bad indicating warped rotors... All new rotors and pads, same result. I really just want it to be pretty tight and smooth, IDK anymore, tried everything I can, now Im here lol
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  #2  
Old 12-01-2010, 04:42 PM
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Bump BTT.... Any ideas?
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  #3  
Old 12-01-2010, 05:13 PM
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leaf spring and trac bar bushings might need replacing.
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  #4  
Old 12-01-2010, 05:22 PM
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Quote:
Originally Posted by Shadowfax View Post
leaf spring and trac bar bushings might need replacing.
Already done both of them, tight as can be
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  #5  
Old 12-02-2010, 09:37 AM
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400lbs tight?
Swap rims and tires with someone.
Hub Centric ballance?
Take Rear DS off from TC and rotate 90*..till it helps, Flange is not concentric..
Rear pinion 2* lower.

What is the alignment set to..all specs
GeorgiaStrokin likes this.
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  #6  
Old 12-04-2010, 11:08 AM
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Quote:
Originally Posted by CT Performance, Inc. View Post
400lbs tight?
The bolts, yes. Should I have a longer track bar for my add-a-leaf?
Swap rims and tires with someone.
Good idea, will do that tomorrow
Hub Centric ballance?
Yes
Take Rear DS off from TC and rotate 90*..till it helps, Flange is not concentric..
Done this many times, I have it in the position that feels best
Rear pinion 2* lower.
How do I do this

What is the alignment set to..all specs
I didnt get a printout
I now have a redhead gear on order, going to get the XRF Tie rods and do those while I'm at it, also thinking about doing X-code springs while doing all this (not 100% satisfied with the add-a-leaf)

Do I need a drop pittman arm with those springs, or track bar?

Thanks
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  #7  
Old 12-04-2010, 11:26 AM
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Quote:
Originally Posted by no-tel-in View Post
Yes, I have searched the forums a good deal but cant seem to make this right.

My truck, cannot, will not and has never been smooth, since I've had it atleast, for 2yrs and 50k now.

Start with what I've done and replaced.
Rotors x4
Pads x4 (Hawk)
Caliper x1
Sway links x2
Sway bushings x2
All 3 rear U-joints (Spicer)
Totally new Carrier Bearing
Tranny (BTS)
Front Hub (Left)
Ball joints x4
Sets of tires x2 (Currently Kumho KL78 315/70/16)
Rear driveshaft balanced (Twice)
New Bilsteins x4
Bilstein dual stabilizer
Various CB shims
Multiple different Alignments
Tires balanced more than once.

Probably more than that.

My wondering problem I believe I have down to the steering gear (200k truck)
It will just go whereever it wants, PITA to drive. All the Tie rod ends are tight, as well as pittman arm to draglink.
Thoughts on that?

Vibration, I am close to the end of the road.
Had a different shop today balance the driveshaft and do a front end alignment and its better but still has an annoying vibration. Very hard to describe, seems to come and go, but above 73 mph, it feels like its going to come apart. From 0-30, pretty smooth. above that its hit or miss. It has the 43-49mph shake everyother super duty has, but this one is worse. Then it seems to shake sometime and not, nothing predictable. When I am braking it vibrates pretty bad indicating warped rotors... All new rotors and pads, same result. I really just want it to be pretty tight and smooth, IDK anymore, tried everything I can, now Im here lol
I have the same issue. I have a new drive shaft, new u joints, carrier bearing. The only thing Im wondering is if it has something to do with my rear wheel bearings. I have 190k on it and this just started one day when I passed someone. Mine feels like my truck is gonna fall apart at 65 when I let off the throttle. But when Im on it, it isnt there. I hauled a car from Gregory, South Dakota to Norther Lower MI and when I had the car on the trailer, the vibration was gone.
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  #8  
Old 12-04-2010, 11:51 AM
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Quote:
Originally Posted by 99dieselsmoke View Post
I have the same issue. I have a new drive shaft, new u joints, carrier bearing. The only thing Im wondering is if it has something to do with my rear wheel bearings. I have 190k on it and this just started one day when I passed someone. Mine feels like my truck is gonna fall apart at 65 when I let off the throttle. But when Im on it, it isnt there. I hauled a car from Gregory, South Dakota to Norther Lower MI and when I had the car on the trailer, the vibration was gone.
Dont know, but we basically have the same number of miles, and mine has been doing this since like early 170's. And mine does all the time, weather im in the pedal or not
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  #9  
Old 02-19-2014, 01:21 PM
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i cannot stand lug centric aftermarket wheels!!!! there isnt enough of a bad word for them. ive been there and done that. Welcome to the forum also!
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  #10  
Old 02-19-2014, 05:01 PM
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I don't have this problem on the superduty but was fighting a vibration on our tahoe for a year. Replaced all sorts of front end parts , steering box , alignments , balance , rebalance and so on. A month ago I had a roadforce balance done and it eliminated 90% of the vibration. Drives fantastic compared to before as over 80 it felt like it was gonna fall apart. It was cheap in comparison to the money spent on needless parts. Might be worth a try
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