6.7L Power Stroke Engine and DrivetrainDiscussion of the 6.7L Power Stroke diesel engine and drivetrain in the 2011-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.7L Power Stroke engine.
I have also been requested to bring my fifth wheel into the dealer to prove that my truck has shudder; this won't happen until April because the trailer is winterized & covered in my back yard.
Cory and Marilyn, I want to thank you for your help with this issue; we'll get the F350 fixed in the spring.
Like2Camp
[QUOTE=Cliffj59;2029348]My buddy has a 2011 6.7 that he uses to pull his horse trailer which weighs 13,000#. On take off it has a very noticeable vibration in the drive train. He has had it to the dealership about 4 times along with his horse trailer so they can pull it and see whats happening. They have shimed the carriage bearing, replaces u joints, shimed the rear end but it still has the problem. Could this be a trannie problem?
Is there anyone else out there that is having any vibration issues?
Ford told him that the trailer weighs to much and it is overloaded but his old 2000 7.3 dully didn't have any problems.
Thanks
manual or auto tranny? if manual look at oil from the rear main on the
clutch; if auto, sure it could be slipping with that kind of torque.
Wonder if the same thing happens with GM trucks? All you guys are driving Fords, right? I have nothing against Fords, having owned two F350 7.3s and one F550 7.3 dumper, all 4 x 4. Only reason I switched to my Chevy was the Ford dealer didn't have what I wanted in stock.
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Past owner of 1997 F350 PSD, 1999 F550 4 x 4 PSD, 2001 F350 4 x 4 PSD, and currently a Chevy Siverado 2500HD, LTZ Allison/Duramax 4 x 4 - the most comfortable ride yet.
I have a 2006 F250 Shortbed crewcab. Bought it at 10K. Previous owner had added rear axle air lift bags due to this problem when pulling his large 5er. I pull a 10k Montana and just air the suspension up to 50lbs and level out the truck and as smooth as silk. I have heard this is a common ailment of the F250. I have read that the driveline is out of plane with a heavy load and thus a vibration. If you change the plane then you could have a vibration at no load. I think the rear air bags are the easiest solution. Cost is probably $500 or so installed.
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2006 F250 Lariat FX4 PSD CC SB
Born June 2, 2005 in Louisville, Kentucky
Edge Insight CTS with Pyro, FP, TT
Dieselsite coolant & transmission filtration
Dieselsite turbo boots
Mobil 1 5W40 Full Synthetic with Motorcraft filters
Amsoil bypass oil filtration
Delo ELC
Blue spring fuel pressure mod (60-62#)
High Idle Mod
Racor CCV6000
Fumoto Oil Pan Drain Valve
HFCM Water Valve Update
QuickStart 140 amp alternator
Airlift LoadLift Suspension
Napa (Interstate) 875 CCA batteries
Centech Battery Float Charger
Transferflow 46 gallon fuel replacement tank
Extang tonneau cover
Stampede Bug Shield
Customflow tailgate
Optilube diesel additive every tank
2000 Montana 3280RL Fifth Wheel 10K (momma's)
1998 Wildwood T195 (fishing trips)
what the dealer does not want you to now is that the trannys are weak. the transmission disc's are chattering. I had one in a tranny shop dropped the pan and found parts of the disc's in the bottom. $4k later it was fixed and no more vibration. Ford knowingly put sub standard disc's in and a class action law suit was filed in Texas by a medical transport company who won the suit. This is something ford knows about but figures most people will not haul heavy loads for extended periods of time. Good luck getting a dealer to acknowlege this fact, much less ford.
I have also been requested to bring my fifth wheel into the dealer to prove that my truck has shudder; this won't happen until April because the trailer is winterized & covered in my back yard.
Cory and Marilyn, I want to thank you for your help with this issue; we'll get the F350 fixed in the spring.
Like2Camp
Hi Like2Camp,
I'll pass along your kind words to Cory. When springtime rolls around, send me a PM and we'll get back to work.
My buddy has a 2011 6.7 that he uses to pull his horse trailer which weighs 13,000#. On take off it has a very noticeable vibration in the drive train. He has had it to the dealership about 4 times along with his horse trailer so they can pull it and see whats happening. They have shimed the carriage bearing, replaces u joints, shimed the rear end but it still has the problem. Could this be a trannie problem?
Is there anyone else out there that is having any vibration issues?
Ford told him that the trailer weighs to much and it is overloaded but his old 2000 7.3 dully didn't have any problems.
Thanks
I thought you needed a Class A license to pull over 10,000 lbs.
I don't know for sure. I always thought the limit for passenger trucks was 10,000 lbs, but I guess if you are towing a 5th wheel the limit is higher. I pull 80,000 lbs so I was just wondering. I haven't read the DMV manual in a while, then again, I'm in California, might be different elsewhere.
Not a torque converter issue. That would be duplicated on a hard acceleration, which it is not. Only present when you hook a load to the truck. I would be interested to know the part numbers for the "heavy duty" driveshaft though if anyone cares to post them.
In Maryland, you can drive any vehicle up to 26,000LBS with a class C, and tow any trailer with no weight restrictions.
Pretty much the same everywhere, folks are confusing vehicle license with operators licence. Your passenger vehicle tags/registration are only good for around 10,000 lbs. most states. You are correct most drivers licenses are good to 26,000lbs. GVW provided it is on 2 axles like a pickup or small truck with a trailer (COMBINED VEHICLE WEIGHT).
Not a torque converter issue. That would be duplicated on a hard acceleration, which it is not. Only present when you hook a load to the truck. I would be interested to know the part numbers for the "heavy duty" driveshaft though if anyone cares to post them.
What happens when there's a heavy load, such as during towing, or a power increase (or both), is that the lockup clutch in the converter slips excessively during lockup engagement. Sometimes this excessive slippage can be felt in the vehicle as a shudder as the clutch tries to engage, then slips, tries to engage, etc. If the load is really high, the lockup clutch can even be over-powered and begin to slip after engagement is achieved. Such slippage accelerates wear of the clutch friction surfaces, and of course, excessive heat is generated. The more the lockup clutch wears, the more it slips. In addition, the more the friction surfaces wear, the more clutch "dust" goes into the transmission fluid, which is shared with the transmission itself. All of this can lead to some very expensive repair work, including a new torque converter and possibly a new transmission.
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2011 F250 6.7, 6" Pro Comp lift, 35x12.50 on KMC Misfit's, Rhino liner
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I thought you needed a Class A license to pull over 10,000 lbs.
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