my 05 bounces when the bed is empty..only thing i've come up with is to put some weight in the bed. just all that open space back there, no weight and the stiff springs make it bounce all over. The down side of the extra weight is it takes away from fuel mileage. A question i'd have is there a "softer" set of springs for the rear? then the disadvantage if "softer" springs gets rid of the bounce then you decrease the weight the truck is capable of handling. a darn if you do darn if you dont situation.

 

I'm now running 80psi in the fronts (max cold tire pressure) and 70 psi in all 4 rears... with the 4 X 8 half inch thick steel plate in the bed -- this is the best overall ride to date. I have the BF GOODRICH "E" rated tires.... and I really think now that the tires (too wimpy for a truck like this) are the biggest contributor to the porpoising and bouncing on my truck. The factory zone guy is still working on a "solution".... but I'm begining to think it's tires rather than suspension issues. The bouncing gets MUCH worse with lower tire pressure. I have had the fronts down to 50 psi and 35 psi in the rear - and you can't ride in the truck like this! At the much higher pressures - you feel every nook in the road - but the ride is so much better - and while it still gets to porpoising - it's really reduced!

 

I really think what you have going on is different than the regular 350 CC LB bounce. Probably a combination of two things.
My 42mph bouncing didn't change at all when I changed tires or tire pressure or dynamic balancing or anything so far. I have not let the dealer mess with the suspension though. I don't have enough confidence that anyone knows what's going on to warrant the hassle of leaving my truck off for any period of time.
Mainly because it's currently my only form of transportation, now that it's too cold and rainy for me to want to use my bicycle
I'll feel less selfish, come nicer weather!

 

Here's the best quote -- directly from my 81 year old Mother in Law while riding with me from Portland to Seattle... for TurkeyDay.

"If I was nursing... I'd have butter!"

I still say the truck rides with less porpoising with more air pressure in the tires. Rides rough - but I don't mind rough... I do mind porpoising needlessly. There is something wrong with these trucks -- and Ford hasn't figured it out. I must say though -- that I drove a new '07 Chevy 3500 Dually... on the very same roads that I drive everyday and therefore know how my truck rides --- and guess what -- it rode the same... I told the salesman.... if it rides better than my Ford I'll buy it.... if not, oh well. We went back to the dealership and parked "their" truck.

I don't hate this Ford - I hate the ride. Yesterday I orderd the full BIG HOSS BUNDLE from BANKS... and I'm shopping Brentz Wheels for some new 19.5" billet wheels - and COMMERCIAL grade tires.... I'm hoping that the better quality sidewalls on the commercial tires might help just a wee bit... They certainly would HURT the *****y ride that's for sure!

 

My 94 CC long bed 4x f-350 had the LA bounce we called it, the concrete highway slabs were just the right distance to get the whole truck flexing in the middle going down the road, it was a wheelbase thing. 45-50mph bounce is a tire out of round, it will act slightly different if on the front or rear, front you will see/feel in steering wheel. I really think with the new sizes of rims, these old tire machines werent built for them and they arent getting down correctly,

"We found the problem on my new 06. Just as I expected, it was tire balance. The service manager at the truck shop got the rep for the balance machine to come out. What he discoverd was that the 20 inch wheels required a different cone to line the wheel up on the balnce machine. Once resolved, the tires were balanced and road forced once again and the problem has been resolved. I guess they have to chalk that one up to experience. The truck rides noticably smootherat all speeds now with no steering wheel shake"

Unless it is the death wobble, it is a tire/wheel problem.

 

It can't be a "tire / wheel problem" when on smooth highways --- it's smooth as glass.

If it were a tire / wheel problem - it would do the bouncing ALL THE TIME ON ALL ROADS... which it does NOT.

It's a suspension design - frame length - wheelbase issue.... because the bouncing is the way the trucks handle the issues of bad roads. The suspension is adding to the problem rather than dampening it.

We're NOT talking about tire balance!

 

Yep, my bad I didn't read the whole paper trail, I agree

 

It's okay!!

I think I'm going to look into this TALON air suspension system.... they seem to understand the problem. I just watched their video.

 

The talon air suspension looks like a real high quality product, but $3700.00 !!! wow. You might also want to consider keldermann air ride.

 

Can you post a link to their website please?

...too lazy to google.. :P

BTW, my issue is 100% the roads out here. When I have a full load... no more bouncing.

 

Yes Desert_Dude --- it's the roads and the overall design.... so we'll just keep working on it til it's mo betta!

Here's the link to the Talon air system --- I think they're a "sponsor" of this site as well?

http://www.talon-usa.com/index.htm

I have no idea what it costs - yet - but will take a good hard look at it. Watch the video on their site...

 

John Lorenzo
Thanks for the post to the thread I started "F250SD - 6.0, cc, sb, 3.73 Vehicle Vibration "

I was searching for others that may have had the same problem and after several hours of trying to find the Thread you posted from - I FOUND IT.

My problem is too Vehicle Vibration that is most pronounced at 48 mph in Overdrive but is present to a lesser degree at Interstate speeds of 65 - 75 mph?

The vibration makes it seem like a washboard at interstate speeds and is resonat at about 48 mph with noticable vibration throughout the vehicle.
The Pirelli stock 265 X 17" White Letter tires are on the vehicle from factory.

I have had the tires and wheels balanced first statically and the last time at the Dealer they were Road Force Balanced Dynamically to no avail.

The service department at the dealer told me tonight that the vibration only occurs at the 45 -50 mph in OD and suggest that I just drive it that way.

Not too interested in that approach for the next several years. I will be following this thread since most with the challenge are concentrating here.

I can use any findings that will help

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 feel bad for all of us out there. We spend around 40k plus for a new vehicle and having to settle with a problem. After the balancing and new tires, my truck only bounces on certain roads. I think the road is the problem. Prior to the new tires, it would bounce on every road. My bouncing is minor compared to you guys and I think mine is just weight of vehicle, suspension built for heavy loads, so it will ride like a truck.

Before I would spend any money and if you are still under warranty, have addressed this issue with dealer while truck was still under 10k miles, I would call Ford corporate and complain. Don't call the customer service number, search for dearborn michigan, find fords corporate number. Ask for the excutive office and place your complaint there. That way you are not dealing with the regional guy keeping a lid on things to make corporate happy.

I know when it is time to replace my wifes Expedition it will not be a Ford. When I am due for a new diesel to pull my boat, I am test driving at all speeds and any hint of vibration I am moving to a different vehicle. I might change brand altogether. I have not had great service from Fords. Five new vehicles in 5 years over 200k and for them to swing four new tires on my wifes Expy they told me to hit the road. I will do just that and fax the letter I sent to corporate with the invoice for my wifes new vehicle which will not be a ford.

I work too hard to afford things. I do not have time to deal with a new vehicle going in the shop. I should not have to commit time for a new vehicle going in the shop under warranty a week after purchase.

 

Chi6488
I agree that this is not a way to treat customers. This is the third vehicle that is essentially the same except for factory changes previously having a 2002and 2004. previous two had engine injector problems that were not acknowledged now this. In the process I have driven about 100,000 mi without a vibration like this.
Seems that Company policy has become less than customer friendly - so you can bet that if the Toyota people place anything close to this vehicle as far as capability anyway on the market many of the Ford friendly truck customers will fly away as has happened in the car division.
I will not stand the cost of another new vehilce to have the company pretend that the problem does not exist. Even if it means going to the Ram it Company.

I am a former International employee with a possible connection to the ride evaluation equipment thru a friend in the relibility group there. Am hoping to get the use of same over the Holiday to evaluate this chassis vibration thing. Hope i can swing it affair.

Will keep you posted down the road.

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

 

Metoo I have to agree with you here the big 3 are getting completely stupid, ignorant, and irresponsible when dealing with their customers. We say Toyota, can you say Nissan?? They two are coming with a Diesel and your right...if they get anywhere close Ford is in trouble as is Chevy and Dodge. It's ironic how those two well hell 3 Honda but they will never be in this realm for trucks but the point is those three take care of you. I have watch friends and family go to them and they handle it...no bs... no I dont know what your taking about etc.. It will be a sad day when this happens but I fear it's on the horizon and closer then most think. We use to all hear about WWIII, well gang it's come and gone, we lost....it wasn't over land, or politics, it was economics.... If you think I am kidding...ask yourself...Why are all the American companies leaving? Why has the American product quality use cars here dropped steadily? Why has the other 3 imports kicked our asses there? I swore I would never own one but it's getting dam hard to argue anymore...We spent including myself 40k-50k a truck. Jesus it costs as much as a house in some places...you would think we would get some decent customer service and the quality would be there.....

I have owned all three Chevy, Ford, and Dodge trucks...I will never own a Dodge again...I had an 03 Duramax and I loved the god dam thing. I had no problems with it. It would tow anything I threw at it and had more power then I knew what to do with. I came to Ford because of reality...when you got 2 kids an extended cab isn't cutting it unless you like knees and I always wanted a Ford. So far to date I have had my first incident over blown shocks at 2500 miles that I was less then pleased about before I got it resolved...I wish someone would kick these ppl in the @#$@#$@. You got loyal ppl no matter which brand...keep screwing with them....guess whose gonna get the last laugh when they go bankrupt.

Pit

Sorry for the rant guys....just sick of the crap I see and it sickens me to see what our country is turning into! Where is my BEER!