TRANSMISSION/ TUNING PROBLEM - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 12-22-2012, 07:04 PM Thread Starter
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TRANSMISSION/ TUNING PROBLEM

Okay bought this truck about a month ago (first 6.4) normal driving it does great no problems at all. but most every time at wot or close to it i dont like how its shifting. 1-2 is fine and sometimes 1-2-3 but 3-5 the rpms raise between gears it takes a few seconds between gears and slams one it does go into 5th any one know what could be causing this? i checked the fluid today was bright red and at the right level called innovative diesel a week ago to see if it was something to do with tuning and i never really got a straight answer. just trying to see if i need to start planning for a new tranny or could it be the torque converter. really hoping it has something to do with tuning. i've been thinking of trying the up graded direct drive solenoid along with a fluid flush and new filters. i'm sure some ppl are tired of seeing my questions but i feel lost with this new truck. thanks for the help.

UPDATE. drove again tonight and at wot it feels as though it tries to shift into 5th twice.


2008 f-250 LARIAT, SCT LIVEWIRE, S&B CAI, 8" MBRP STACK

Last edited by JD_MILLS; 12-22-2012 at 09:11 PM.
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post #2 of 11 Old 12-23-2012, 05:14 AM
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It could be th torque converter that may be why your feeling two shifts. One when it changes gears and 2 when the converter locks. Just an idea, good luck!

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post #3 of 11 Old 12-23-2012, 05:46 AM
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Its most likely not the converter. Some people have had good luck with putting a half quart to a quart of extra fluid in the trans.



2008 F-250 KR
7" ICON
7" PMF blocks
Bilstein 5160F/5100R
22x14 Fuel Octane
37" Toyo M/T
H&S Mini Maxx w/ Gearhead tuning!
5" Diamond Eye
4" Diamond Eye DP
ARP head studs
Custom Stock Intake

RCD converter, HD billet input, low/rev hub, suncoast clutches.
160k miles and counting...
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post #4 of 11 Old 12-23-2012, 06:50 AM
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If you can adjust the trans tuning to something else I'd try a different trans tune, also the extra half quart worked well for me...make sure the trans dipstick does not twist when putting it back in, if it does twist it might smear fluid and give you a off reading...

2008 F250 XLT CCSB- 90k, 5R110W, b&w hide-a-ball, DIY coolant filter, final charge, dieselsite boots, xrt pro, CAI, SGII, egt gauge, DIY egr cooler blocked/bypassed, viper alarm/ remote start, P/S filter
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post #5 of 11 Old 12-23-2012, 07:30 AM
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The gogo dd solenoid fixed that problem for me. Made the 3-5 shifts much firmer

08 F350 cc/sb 4X4
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post #6 of 11 Old 12-23-2012, 08:09 AM
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My vote is trans is done. Slip banging isnt good neither is the flare between gears. Tuner+exhaust adds hp easily over 500 and stock trans dont last long with the amount if power these 6.4's can put down with basic mods.

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2003 centennial edition f250 4x4 ccsb auto w/blackwater long block w/arp's, 4" exhaust, airaid intake, ODawg's manifold, itp's reg return, sap modified solenoid, DC power 185amp alt, motorcraft 850cca, Warn Hubs, RS 55w 6k hid's, harley headlights, bpd 58v 6 phase, bpd water pump, dieselsite coolant filter, elc coolant, php gryphon, Xcal2 w/unlimited tow, new hfcm, glowshift fuel psi gauge, icon level kit, 20" kmc hoss, 305/55 terra grapplers TOTALED
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post #7 of 11 Old 12-23-2012, 08:24 AM
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Yeah when mine did a slip bang it was done. 4th and 5th slip a lot



2008 F-250 KR
7" ICON
7" PMF blocks
Bilstein 5160F/5100R
22x14 Fuel Octane
37" Toyo M/T
H&S Mini Maxx w/ Gearhead tuning!
5" Diamond Eye
4" Diamond Eye DP
ARP head studs
Custom Stock Intake

RCD converter, HD billet input, low/rev hub, suncoast clutches.
160k miles and counting...
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post #8 of 11 Old 12-23-2012, 10:28 AM Thread Starter
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Driving it now and if my rpms raise any so does my speed. Don't know if that makes a difference or not. Also it does it about every other time.

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2008 f-250 LARIAT, SCT LIVEWIRE, S&B CAI, 8" MBRP STACK
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post #9 of 11 Old 12-23-2012, 10:31 AM Thread Starter
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If it was the transmission or converter slipping would it throw a code?

Sent from my SCH-I500 using AutoGuide.Com Free App


2008 f-250 LARIAT, SCT LIVEWIRE, S&B CAI, 8" MBRP STACK

Last edited by JD_MILLS; 12-23-2012 at 10:39 AM.
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post #10 of 11 Old 12-23-2012, 11:21 AM
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Quote:
Originally Posted by JD_MILLS View Post
If it was the transmission or converter slipping would it throw a code?

Sent from my SCH-I500 using AutoGuide.Com Free App
Usually, but not always. The towhaul will blink and store a code. Trans codes wont show up as a cel or be readable by an obd2 scanner. Need AE or the dealer tool.

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2003 centennial edition f250 4x4 ccsb auto w/blackwater long block w/arp's, 4" exhaust, airaid intake, ODawg's manifold, itp's reg return, sap modified solenoid, DC power 185amp alt, motorcraft 850cca, Warn Hubs, RS 55w 6k hid's, harley headlights, bpd 58v 6 phase, bpd water pump, dieselsite coolant filter, elc coolant, php gryphon, Xcal2 w/unlimited tow, new hfcm, glowshift fuel psi gauge, icon level kit, 20" kmc hoss, 305/55 terra grapplers TOTALED
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