6.4L Power Stroke Engine and DrivetrainDiscussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008 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 6.4L Power Stroke engine.
I have the dreaded shudder in the drive line at take off when towing. This truck has it worse than any truck I've owned.
In addition, when towing at speed I get a shudder when the transmission down shifts. It does it the most when the cruise is on.
I've had the same shudder when not towing and I hit resume on the cruise control. You tell me what's wrong. Torque converter?
Shawn
__________________ 2008 F-450, 4 X 4 with 4.30's, auto with manual transfer case with factory cup holders. All options except sunroof and nav. Line X with Extra. 24K Draw-Tite Signature Series Fifth Wheel Hitch. 65 Gallon KSH Marine fuel/tool combo in bed. Viar 480C compressor with 8 gallon tank. Hadley Air Horns hooked up to Auto Mate alarm. PICTURES
"Don't worry be happy". A visit to your friendly Ford dealer should solve the problem. It sounds like you need the TSB for driveline shudder. The 08's have an issue with carrier bearing shimming. The longer 08 leaf springs have had an effect. Your tranny is most likely not the problem.
__________________
02 F350 Lariat CrewCab Toreador Red/ Silver DRW AT 4X4 4.10 gears, BTS custom chip, and tranny. built BTS and Ford Tough! 752,243 miles
SOLD: 02 F350 Lariat CC Toreador Red, DRW AT 4.10 gears, BTS custom chip, and Tranny 214,550 miles,Built BTS, and Ford Tough!
Sold 94 XLT SC DI DRW 5Speed 314,000
04 Grand Marquis LS sure wish it had a BTS!
Lifetime Member "BTS BUBBA" Association
"Ain't no feelin like BTS mobilin"
SLAPS Member
62 Corvair 95 Bus
it either needs a shim, or you are getting some axle wrap, but its not the tranny
__________________
2008 Ford F-250 CC SB
Dark Pearl Blue(complete repaint under warranty)
6" Stage II Pro Comp Lift
17x9 Pro Comp 7189
37x12.5 BFG M/T KM2's Try the SEARCH Button Because It's Probably already been asked
Shimming is not the answer......read down a page or two to the long thread on this...."drive line shudder under load"
Get on your dealer.....and please post your results.....we all need the networking on this....Ford is promising a fix within a few weeks. These are far too nice a truck to have this happening!
__________________
RJ
2008 F-350 Lariat 4x4 LWB Crew Cab, 6.4, Auto Trans, Job 2
NRA Life Member
"Don't worry be happy". A visit to your friendly Ford dealer should solve the problem. It sounds like you need the TSB for driveline shudder. The 08's have an issue with carrier bearing shimming. The longer 08 leaf springs have had an effect. Your tranny is most likely not the problem.
Do you have the TSB number? I can't find it. I'm going to try and get it to the dealer next week. I don't think shimming is going to help my problem.
Shawn
__________________ 2008 F-450, 4 X 4 with 4.30's, auto with manual transfer case with factory cup holders. All options except sunroof and nav. Line X with Extra. 24K Draw-Tite Signature Series Fifth Wheel Hitch. 65 Gallon KSH Marine fuel/tool combo in bed. Viar 480C compressor with 8 gallon tank. Hadley Air Horns hooked up to Auto Mate alarm. PICTURES
heh... axel wrap.... i get lots of axel wrap..... if i hit it too hard comming off the line or empty or 1/2 full i hop right through the intersection... till the turbos spool then it sticks and im gone though sometimes towing when it downshifts it also happens..
P.S. truck is in the shop for semi failed mode/selector doors on the heater-a/c (mostly defroster only) should have it back by the end of the day
__________________
~ Mike
2008 BLACK F350 XLT RC SRW 4x4, 6.4, Auto,3.73ls, ManualTransferCase,PTC-Heater. Pic's She is Sweet...
DORA recieved:9/14/07 || ReceiptDate:9/14/07 || SerializeDate:11/01/07 || SegmentDate:11/01/07 || SequenceDate:11/10/07 || BlendDate:11/13/2007 || GesitmatedBuildWeek: 12/10 || ProducedDate:11/21/07 || GateRelease:11/21/07 || ShipDate:11/24/07 || ArrivalDate:11/30/07 || SoldDate:11/30/07 ||
Shimming is not the answer......read down a page or two to the long thread on this...."drive line shudder under load"
Get on your dealer.....and please post your results.....we all need the networking on this....Ford is promising a fix within a few weeks. These are far too nice a truck to have this happening!
I finally had enough time last Wednesday 08/27/08 to take my truck in. The mechanic hooked up his computer and we went for a ride. I couldn't get the truck to duplicate the problem. Nothing showed.
Today, Wednesday 09/03/08 I again went to the dealer. This time, I was dragging my trailer. Same deal as last week, with the same results. Next the mechanic measured the drive line angle at the carrier bearing. The mechanic told me the minimum angle is .50 and my truck was .20 so he shimmed it to .80.
I have the same exact problem as tfunk88 describes in this post when I get in to the hills/mountains. Living in the flat lands, I can't get the truck to duplicate the problem.
The fly in the ointment is the fact that I won't be towing again for some time.
I can't believe how chintzy the carrier bearing is on the 08's. They are nothing like the previous trucks. The mechanic is checking to see if the if the old style will work on my truck. If it does, I'm going to change it out even if I have to pay for it myself. All of this is driving me crazy.
Shawn
__________________ 2008 F-450, 4 X 4 with 4.30's, auto with manual transfer case with factory cup holders. All options except sunroof and nav. Line X with Extra. 24K Draw-Tite Signature Series Fifth Wheel Hitch. 65 Gallon KSH Marine fuel/tool combo in bed. Viar 480C compressor with 8 gallon tank. Hadley Air Horns hooked up to Auto Mate alarm. PICTURES
I finally had enough time last Wednesday 08/27/08 to take my truck in. The mechanic hooked up his computer and we went for a ride. I couldn't get the truck to duplicate the problem. Nothing showed.
Today, Wednesday 09/03/08 I again went to the dealer. This time, I was dragging my trailer. Same deal as last week, with the same results. Next the mechanic measured the drive line angle at the carrier bearing. The mechanic told me the minimum angle is .50 and my truck was .20 so he shimmed it to .80.
I have the same exact problem as tfunk88 describes in this post when I get in to the hills/mountains. Living in the flat lands, I can't get the truck to duplicate the problem.
The fly in the ointment is the fact that I won't be towing again for some time.
I can't believe how chintzy the carrier bearing is on the 08's. They are nothing like the previous trucks. The mechanic is checking to see if the if the old style will work on my truck. If it does, I'm going to change it out even if I have to pay for it myself. All of this is driving me crazy.
Shawn
Man, if you get it figured out let me know and I'll do the same!
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
truck I've owned.
Bus
though sometimes towing when it downshifts it also happens.. 
Linear Mode
