Tranny Nightmare - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 05-23-2006, 09:48 PM   #1 (permalink)
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Tranny Nightmare

My F250 with an automatic trans will not downshift and I suspect an electrical issue. It has 186k on it and it is in excellent cond with bright pink trans fluid. Please advise because I have no idea where to start.

Thank you

Jason
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Old 05-23-2006, 11:01 PM   #2 (permalink)
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Re: Tranny Nightmare

What year?

Perhaps Mechanical Diode issue?
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Old 05-23-2006, 11:03 PM   #3 (permalink)
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Re: Tranny Nightmare

2001 SD diesel 4x4
\
where is the diode located and what is the specific name for the part
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Old 05-24-2006, 06:26 AM   #4 (permalink)
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Re: Tranny Nightmare

It is way inside the tranny and you might as well rebuild while you are in there. Congrats most of them failed long before the miles you racked up. If you plan on keeping the truck I would have BTS build you a bullet proof tranny.
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