Tracking Down Shudder At WOT - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 04-21-2013, 05:25 PM Thread Starter
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Tracking Down Shudder At WOT

Trying to track down a shudder under WOT.
Been searching and found a few possible causes.
No vibrations at all in any other condition except when I hammer down on the skinny pedal. Was noticeable when I was racing a F-350 off the line last night
I noticed it more before I got a custom tune. Seems to be a lot less after tune.

I've had vehicles both lifted high and lowered scrapping the ground so I know what a driveline vibration feels like. Truck run excellent

Could this be something fuel related, running stock turbo (for now)?
Can this possibly be corrected further through the tune?

Open to all insight on this...

Thanks in advance

2005 F-550 4x4 22.5's
Kelderman Air Ride
Bulletproof Diesel Remote Oil Cooler W/F550 Cooler
Bulletproof Diesel Billet Water Pump
Bulletproof Diesel Radiator
Dieselsite Wicked Wheel, Dieselsite Coolant Filter Kit
Warren Diesel 155/30, Bluespring Mod, 6.4 Banjo,
Updated STC, Turbo Feed and Drain Tubes,
PMM EGR Delete
SCT Tuner, Edge Insight w/EGT, Fuel and Oil Pressure
Tuned By MATT @ Gearhead Automotive Performance
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post #2 of 16 Old 04-21-2013, 05:29 PM
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It could possibly be an injector, any codes?

Cameron
2006 F250 Lariat CCSB
Comp Turbo 64/88 compounds
Warren 285/100
ODAWG ported intake
R&R rods, mahle pistons, stage 2 colt cam
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post #3 of 16 Old 04-21-2013, 05:29 PM
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Torque Converter?

2014 F250 Platinum
4" Pure Performance lift
20x10 Novas 35" Toyos
Mini Max
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post #4 of 16 Old 04-21-2013, 05:30 PM
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i think i feel the same shutter i think my tork converter might be going?

2006 ford f350 xlt cclb
blue spring mod
6.4 banjo bolts
gogo direct cluth solenoid
Insight cts with pyro
str8 pipe , fuel pressure gauge
air raid cold air
zoodad mod
high idle mod
sinister coolant filter kit ec-1 rated
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powermax turbo , sinister y pipe
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sct x3 with running looney wild , spd early lock up
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post #5 of 16 Old 04-21-2013, 05:39 PM Thread Starter
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Quote:
Originally Posted by snafu! View Post
It could possibly be an injector, any codes?
New Warren Injectors... I was getting a code for the FICM but my voltage is 48, does drop to 47.5 randomly.

2005 F-550 4x4 22.5's
Kelderman Air Ride
Bulletproof Diesel Remote Oil Cooler W/F550 Cooler
Bulletproof Diesel Billet Water Pump
Bulletproof Diesel Radiator
Dieselsite Wicked Wheel, Dieselsite Coolant Filter Kit
Warren Diesel 155/30, Bluespring Mod, 6.4 Banjo,
Updated STC, Turbo Feed and Drain Tubes,
PMM EGR Delete
SCT Tuner, Edge Insight w/EGT, Fuel and Oil Pressure
Tuned By MATT @ Gearhead Automotive Performance
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post #6 of 16 Old 04-21-2013, 07:01 PM
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I had an older Mustang and it would do the same thing under WOT. Ended up being u-joints.

Joe

2006 F350 XLT CrewCab 4X4
EGR Delete
Zoodad Mod
High-Idle Mod
Sinister Coolant Filter
ARP Head Studs W/ OEM Gaskets (Installed myself)
Upgraded Fuel Spring
Updated STC Fitting
Updated Oil Cooler Screen
Updated Dummy Plugs/Standpipes
6.4L Banjo Bolts
PHP Ficm Tuner
1/4 Mile 14.2 @ 93MPH

SCT Custom Tunes: MKM, Looney, SRL, SRLXX, Wildman and SPD w/ Early Lock up
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post #7 of 16 Old 04-21-2013, 09:31 PM
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Axle wrap. Throw some bars on and see if it cures your issue.

Anarchy Diesel Tuning
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post #8 of 16 Old 04-21-2013, 09:53 PM
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I've noticed the same thing with my truck, when are you getting the vibration?

John

2004 Harley Davidson F250 #1191 - 6.0 Powerstroke
Studded - Lots Of Bulletproof Diesel Parts
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post #9 of 16 Old 04-24-2013, 07:11 PM
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Quote:
Originally Posted by 3brorce View Post
Axle wrap. Throw some bars on and see if it cures your issue.
You hit the nail on the head. I can almost 100% gurantee axle wrap. I have seen trucks do it so bad that the drive shaft will hit the pinion flange and roll the ear over the u-joint cap. If yours is that bad, it may have a witness mark on it. You will definitely need traction bars.

06 F250 Reg Cab. ARP's, RCD Billet Powermax, Warren 190/100's, Areo A1000 Pump, Driven Diesel Reg Return, All AN Lines from the sump, Intake and Exhaust, 4" BDS Lift, Long Arm 4-Link, Dana 80 swap, 1480 u-joints, 4"/.108 driveline, Detroit Lockers (both axles), Warren Trans w/ Billet Shafts, Drive Flanges, 35"s, Traction Bars, Front Suspension Stops(For Tug-A-Truck), Rear Suspension Stops, Custom Hitch, Roll Pan, Lots of Drive Shafts, Axles, and Pinions.
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post #10 of 16 Old 04-25-2013, 05:48 PM Thread Starter
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Quote:
Originally Posted by Fantom View Post
I've noticed the same thing with my truck, when are you getting the vibration?
Only when I am getting on it it the upper rpms. Between 3-5. It isn't the torque converter going in or out. It is locking up in 5th.

I am leaning towards driveline. I have a Kelderman Air Ride suspension in the back that may have a little to do with it possibly. Maybe even the carrier bearing. Will be digging into it this weekend to see if I can locate the cause.

2005 F-550 4x4 22.5's
Kelderman Air Ride
Bulletproof Diesel Remote Oil Cooler W/F550 Cooler
Bulletproof Diesel Billet Water Pump
Bulletproof Diesel Radiator
Dieselsite Wicked Wheel, Dieselsite Coolant Filter Kit
Warren Diesel 155/30, Bluespring Mod, 6.4 Banjo,
Updated STC, Turbo Feed and Drain Tubes,
PMM EGR Delete
SCT Tuner, Edge Insight w/EGT, Fuel and Oil Pressure
Tuned By MATT @ Gearhead Automotive Performance
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