3-4 shift flair when TFT warmed up - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 10-12-2011, 09:19 PM Thread Starter
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3-4 shift flair when TFT warmed up

Hi guys I'm new here! I have a 2005 F350 SRW with 93k. I just recently noticed when the trans is cold it shifts slow and lags. When the trans is fully warmed up, from a stop it only flairs on the 3-4 shift if below 2-2500 rpm, I just had the trans serviced at 88k when the headgaskets/oil cooler went. I know I have an older flash from ford. I was thinking about trying a new flash but don't wanna spend $ to find out its the same or worse. Anyone have any idea where to begin looking for a solution? Thanks!
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post #2 of 10 Old 10-19-2011, 09:34 AM Thread Starter
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Bump anyone have any idea? Thanks!
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post #3 of 10 Old 10-19-2011, 09:43 AM
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i had the exact same problem. My shift would flare from 3-4 when the TFT was cold. I changed the tranny fluid and got the modified DD solenoid from gogo diesel and that fixed the problem

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #4 of 10 Old 10-19-2011, 10:14 AM Thread Starter
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How hard was it to change the dd solenoid? How much you think a shop would charge? Thanks!
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post #5 of 10 Old 10-19-2011, 01:21 PM
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Quote:
Originally Posted by 6ohslow View Post
How hard was it to change the dd solenoid? How much you think a shop would charge? Thanks!
It wasnt hard. Once you drop the pan its right there. I cant imagine a shop would charge much. The best time to replace it is when you are changing your fluid and filter.

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #6 of 10 Old 10-21-2011, 10:38 AM Thread Starter
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Does anyone know if getting an sct tuner n raising the line pressure in the transmission will help the flair?
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post #7 of 10 Old 11-06-2011, 04:40 AM
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I see the same thing. In tow/haul it will shift crisper or in normal mode under a litle more load/throttle. I have played with the SCT line pressure settings in an attempt to fix it but with very inconsistent results. I'd say SCT line pressure adjustments don't fix it.

2005 F350 CCLB Dually 4x4 Lariat 6.0L

Fixes:
Coolant flushed & DieselSite coolant filter
Blue spring
New OC & STC upgrade
Turbo lube tubes upgraded
Insight CS
BPD EGR Cooler
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post #8 of 10 Old 11-06-2011, 09:29 AM Thread Starter
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Have you done anything to fix the flair? I'm ordering the gogo dd solenoid. Will post back with results. Thanks.
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post #9 of 10 Old 11-06-2011, 04:24 PM
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thank god i read this, i was getting worried. spent enough money on 165cc nozzles with banjos, fittings n lines and arp head studs this week and then i janked my trannie on friday, hopefully its the solenoid. when shifting to 4th it flares, 2-2500 rpm. and when in tow haul its not as bad. i only drove it when it was warm tho, don't know what its like it when its cold.
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post #10 of 10 Old 01-09-2012, 12:49 PM
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How did you guys make out with the new solenoids? Mine just sstarted this and I'm pulling it into the barn tonight for head steads and the rest. I would like address this issue while it is in there, but maybe best to just wait until it back on the road. It started going this after i pulled my thermostat to flush the coolant so the truck never really warms up to the 190* but the tranny is at 150-155 and I know normal is 165*. not sure if 10* would make it flair like this.

Was the gogo a "GO"?

2004 F350 ECSB Powermax, 4" turbo back with muffler, SCT Livewire w/ SRL, ARPs, EGR delete, Spring, Banjos, some other zoodads

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