3-4 shift flair when TFT warmed up - Ford Powerstroke Diesel Forum
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Old 10-12-2011, 09:19 PM
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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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Old 10-19-2011, 09:34 AM
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Bump anyone have any idea? Thanks!
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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
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Old 10-19-2011, 10:14 AM
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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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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.
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Old 10-21-2011, 10:38 AM
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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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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.
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Old 11-06-2011, 09:29 AM
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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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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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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"?
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