I have aftermarket wheels.

 

Thanks for the information

I assume ?

1) You have an bounce vibration issue
2) Not running factory tires
3) Not using either the factory steel or cast wheel.

We must limit the data analysis so we can determine which factory wheel if or if not is causing an issue. It might be both. For after market wheels I would not know how to compare the data correctly other than category 3 for after market wheels. But then is all else standard factory on the truck? There are many variables when it comes to vibration so our data analysis must have factory stock trucks with the problem and then determine the wheel combination that is potential issue.

Thanks have a nice day.. Jim

 

I have 33-12.5-16 tires on 10" wide aluminum wheels. I do have the bounce issue. This is what is leading me to believe it is driveshaft related. Also does it in neutral therefore eliminating engine and trans.

 

i see how this informations is good but some of us(including me) have tried multiple sets of tires and wheels. I have tried 3 stock wheels and tires and 3 aftermarket with it still being there. ford replaced 4 stock tires for road force issues but still have the bounce. all this was before and after lift installed!!!

 

Ok,, best of luck finding your answer.. Have a nice day.. Jim

 

Has your dealer went thru and seen that everything else is tight in the front end?

 

EDPD99,
Not sure if your truck is still under warranty or not, but if so, it seems that it would be beneficial to take the truck back to (factory stock) and keep on pushing until the FoMoCo field reps become involved and fully fix the problem or replace the vehicle.
Not a pleasant procedure but one that eventually would solve the problem.
With my vehicle I paid for 2 balance jobs at Dealers (1 was Static & 1 was Road Force ) without any change in the vibration at the 40 - 48 mph or the 72 -73 mph. Then on the 3rd visit to resolve the vibration the Service Mgr told me the problem vibration was the worst at 47-48 mph in OD and to just not let the vehicle go in to OD.
That was not a solution and I let him know in a kind manner that I did not intend to drive a new vehicle until it was out of warranty and for several thousand miles after that, when there was clearly a problem that would in time affect the reliability of other suspension and steering components. That is one of the reasons that I went to the effort to prepare and report the results of the Electronic Vibration Analyzer test the was completed as shown on the link provided.

http://good-times.webshots.com/album/556451756KWzCEb

Incidentally, I have since delivered the report to the dealer with a cover letter requesting the involvement of the Field Engineers and to my surprise they took my vehicle that day with the intent of completing 1st the Service Bulletin :TSB #052624 Vibration Diagnosis – Tire / Wheel Runout. Apparently that procedure needed to be completed before they can involve the Company Field Techs.
I really think from what has happened that the Dealership personnel (in my case) just don't know how to correct the problem when it surfaces and if they ( because they don't know) can get us to quit, it becomes the course of least resistance. I doubt very much that the service techs really don't want to fix it because generally most are very conscientious but the proper resources are not available.
Additionally, I am convinced that the changes made to increase the gvw and soften the suspension of these trucks in 2005 MYhas made them much more touchy to the -wheel/ tire, driveline imbalance and even the engine frequeny harmonics problem.

2006 F250 LARIAT 4X2 -9600 GVW w/ AUX SPRINGS; 6.0 DIESEL,SRW, SB,CC, ITC,HTD SEATS, B&W TURNOVER BALL- GOOSENECK HITCH, HR ALUMASCAPE 5th WHEEL

 

i was actually told to install the lift by my dealer since they tried all the tsb tire/wheel runout already as well as balance driveshaft. they said that it should dissapear with some of the things i was changining. they have checked it once after lift installed because it was still there at the exact same speed. they tried to find out but with no success. service advisor told me his does the same thing and they have been looking for along time for a fix. he said once they come up with something hed let me know because if ford gets invloved it wont be covered under warranty. he is really trying to help me out.

Vettdvr(Jim) I did not intend that to sound disrespectful or demeaning in any way. i was simply just throwing out that in my case as well as others is that it doesnt appear to be tire/wheel runout. possibly axle, drivtrain vibrations or resonance(sp?).

 

I am curious if it might be the chassis flexing because of the length in conjunction with the harmonics of the driveline at that speed range. Mine seems to be a hopping.

 

I have this bounce problem with my '06 CC longbed 20" cast wheels, had it with my '03 CC shortbed 16" steel wheels, (seems more pronounced with the longbed) and had the same issue with my '97 F150 SC shortbed 16 " cast wheels. In all of the trucks it happened mainly while driving on the highway and it varied with the type and condition of the pavement. The '97 issue was most noticible on concrete surfaced highways. I think the guys that are checking the harmonics issues are on the right track. Unfortunately I do not believe that there is going to be anything that can be done to reduce or eliminate this problem. It seems to be a design characteristic of the truck. Between the long wheel base, chasis flex and stifly sprung leaf springs, it's gonna be a tough one. As far as the vibration issue and TSB, I believe that refers to vibration on initial acceleration, which I had in the '03 and have in the '06. It is most noticable on heavy acceleration. It's obvious to me that this is another elusive problem, because the TSB came out way prior to '06 on this and if it provided the solution than the '06 truck shouldnt have the problem at all.

 

Funny -- there are really TWO THREADS going here --- one is VIBRATION --- one is BOUNCE -- neither are related. My 06 CC LB Dually BOUNCES!! but is otherwise smooth as glass.

I picked up the Talon Suspension System at the truck depot today --- will install that and see if this "trick" set up helps with the horrible ride this truck has. Smooth roads - smooth ride (relative) - Concrete hiways you can barely tolerate the ride. It's NOT vibration I'm talking about. It's -- as the thread title implies "BOUNCING" up and down front to back.

Merry Xmas to all!
Greg

 

I agree

My crew cab 4x4 long bed bounces. At 40 -45 mph it's as if the I can see and feel the bed bouncing .Really weird but no other way to explain it. No vibration ,no shimmy.Just one helluva bounce.Did it with stock tires.Does it with BFG's . Kind of embarassing for a 40K truck.
Only times it doesn't bounce is when there's a loaded trailer hooked to it. I emphasize LOADED trailer 'cause an empty trailer just makes it worse.

 

I think the problem with the Ford steering bounce or vibration what ever you want to call it is an engineering problem that has been around a while thru quite a few different body styles ,and it doesn't seem to me to make a difference weather it's 150 350 , 2WD, 4x4, long, or short , it goes all the way back for me to my first new Ford truck a 1979 it was a hard truck on tires and scalped them up bad , couldn't keep it in alignment , once tires worn ride was bad , I had a new 82 Bronco which was one tire and steering bar eating machine that was a poor steerer, I had a 1991 Ford 350 superduty that also scalped more tires than the Indians did and rode like a donkey with sore feet , now I got a 2006 350 superduty that bounces , jumps , vibrates , pulsates at 45 mph and is rough on tire wear , I think the problem has been in the geometry of the steering systems Ford has been using since way back , I think changing tire sizes , rims, lift kits all add to the problem , I am not an engineer but I did stay at a Holiday Inn a few years back

 

Fishfiles -- GOOD ONE!! Made me laugh so made my day! THANKS!

I agree -- which is why I ordered the Talon Suspension Systems rear "eliminates the springs" setup.....

Greg

 

One thing I noticed the other day --- while trying to see what sets these big ol Fords off ------ at 60 there was little bouncing -- at 70 it was horrible -- at 80 is was mostly gone. This is on CONCRETE highways with the expansion joints..... so as someone said in the past in this thread -- there seems to be an issue with the wheelbase length/highway joint interaction. My tires and wheels are smooth on most all other types of roads.

'06 F350 King Ranch - Black
LB - Dually
Full Banks System --- EEEEEEHHHHHAAAAAAA