Won't go into 5th gear - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 03-01-2013, 08:01 PM Thread Starter
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Won't go into 5th gear

History: 2008 Job 3 6.4L tuned at 30,000 miles w/ H&S Tuning, has 6" lift and 37" tires. Tranny was great until I installed track bars at 50k miles and since then I have had a minor slip between 4th and 5th gear and it will occasionally shudder when it downshifts.

Present: Today at 66k miles when I accelerated it did the downshift shutter, threw codes and would not shift into 5th or keep the TC locked in 4th. I pulled over and erased the codes (which was stupid) but I believe they were a drive solenoid stuck code, and a slip code. Once I cleared them the truck would still not shift into 5th or keep the TC locked in 4th. I re loaded my tune and still no luck, I'm trying to make this Transmission last another year as I only drive the truck about 10k miles a year.

Any help is appreciated.

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post #2 of 3 Old 03-02-2013, 09:05 AM
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Re: Won't go into 5th gear

Sounds like maybe your overdrive clutches are going out.

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2008 F-250 KR
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 #3 of 3 Old 03-02-2013, 10:35 AM
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Re: Won't go into 5th gear

Time for a new transmission.

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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