bouncing down new smooth roads....

[Scot]

Has anyone come up with a solution to the SC & CC bounce that occurs on smooth roads for some reason. I think there is a service advisory out there somewhere but I was looking for someone who actually solved it, not just a list of things for the dealer to try. I'm out of 3/36 warranty and don't want to deal with the dealer for non engine issues

I changed from the stock rancho shock to a Monroe Reflex but that didn't help. I was thinking of trying a standard shock instead of Reflex or comparable 9000 series from other makers.

I have also tried different tire pressures 50-75 and nothing helps. With the stock shock it bouced bad empty. Now with the reflex it bounces with the trailer also.

 

[69oiler]

i have this bounce too i wonder what causes it

 

[Nasty]

Never

noticed this bounce your referring to other than what I get from the not so smooth hiways we have way too much of. But, really, have never had it on smooth stretches of road. Can't say as I ever heard the driver complain of it either. I'm still running the original shocks n such although I do have Firestone Ride-Rites. Maybe..............

 

[BamaSixGun]

i have noticed that all interstates that have stretches of concrete are way ruffer than asphalt paved interstates.

when i was pulling my car carrier trailer empty on a road that was concrete, it would bounce the girdle off a fat women. i guess because the concrete is poured in sections, and i would get that occilating effect, it was much smoother when loaded.

is this the kinda rough drive your getting scot???

 

[Scot]

It happens on new / almost new concrete roads. near perfest conditions. All the vehicles around me are riding smooth. I've driven commercial trucks on these same sections of road and they don't bounce, so it can't be a symptom of stiff suspension. I see chevy and dodge 3500's near me with no bounce either.

Bama said it best "oscilating effect" A very rapid pace oscilating would describe it. anything on my center divider/ armrest on these roads is shaken off.

The only good thing about it is; get the right passengers and you get quite the show

 

[powerboatr]

Tsb 07-5-11 Vibration/hop At 40-48 Mph - (8.0 Hz) - Trailer Hitch Equipped Vehicles Only

--------------------------------------------------------------------------------

FORD:
2005-2007 F-Super Duty


ISSUE:

Some 2005-2007 F-Super Duty vehicles with a long wheelbase of 156", 158", or 172" (396, 401, or 437 cm) and equipped with a trailer hitch may exhibit a vehicle vertical vibration, often described as "hopping", on smooth or coarse road surfaces in the 42-48 MPH (68-77 Km/h) speed range. Although this behavior is considered normal for an over 8500 GVW truck, some customers may be sensitive to the concern.
ACTION:

To improve the 42-48 MPH (68-77 Km/h) vertical vibration, follow the instruction sheet included in the Damper Service Kit.

NOTE: THE INSTALLATION OF THIS DAMPER WILL NOT IMPROVE RIDE ON SEGMENTED CONCRETE HIGHWAYS, STEERING WHEEL VIBRATION/SHIMMY, OR GENERAL HARSH RIDE CONCERNS.


PART NUMBER PART NAME
5C3Z-5D008-A Damper Service Kit

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION DESCRIPTION TIME
070511A 2005-2007 F-Super Duty With Trailer Hitch: Install The Damper Service Kit. 0.6 Hr.

DEALER CODING

BASIC PART NO. CONDITION CODE
5D008 42


--------------------------------------------------------------------------------
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.


i had this done and it has helped beleive it or not,
if your out of the 3/36 it might cost you some duckets, but then again it might not depending on how they write it up

 

[BamaSixGun]

WOW, your're good robert

 

[acjjkamp]

the "dolphin effect"....had many fun rides into LA, although the wife didnt think so

Robert, did that help on the concrete at all?

 

[Scot]

That's the one. I don't think the speed thing is accurate I get it all the way to 90MPH. Maybe higher, I just havn't tried.

 

[WD40]

Right on Scot, Mine does it at 65 or 75 on I-30 around the 107 to the 110 mile marker. Thanks Robert, I will get this checked out.

It will bounce the girdle off a fat girl.