4r100 2nd Gear - Diesel Forum - TheDieselStop.com
'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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post #1 of 10 (permalink) Old 04-29-2017, 05:43 PM Thread Starter
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4r100 2nd Gear

I have a 2001 Ford F250 4x4.7.3 Stock. I am having a issue were it has a occasional slip in 2nd, not all the time but becoming more often, do I need to rebuild the transmission or is there something else i can check

2001 Ford F250 4x4 CrewCab 7.3 Automatic, 4 inch MBRP exhaust, Diablosport Predator, Edge evolution (monitor only), Cold Air intake,
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post #2 of 10 (permalink) Old 04-29-2017, 08:59 PM
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You need to rebuild it. The 2001 diesels had a new type one way clutch that was prone to failure. You have the symptoms.
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post #3 of 10 (permalink) Old 04-29-2017, 10:48 PM
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The dreaded mechanical diode.

Make sure the convert it to the other style.
Don't have them put in another new mech diode
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post #4 of 10 (permalink) Old 04-30-2017, 01:33 AM Thread Starter
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Can I pull the guts out of a 4r100 off a 5.4 and put them all in my 7.3 4r100???

2001 Ford F250 4x4 CrewCab 7.3 Automatic, 4 inch MBRP exhaust, Diablosport Predator, Edge evolution (monitor only), Cold Air intake,
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post #5 of 10 (permalink) Old 04-30-2017, 07:49 PM
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Quote:
Originally Posted by blue99stroker View Post
The dreaded mechanical diode.

Make sure the convert it to the other style.
Don't have them put in another new mech diode
You can't even get a new mechanical diode for this trans.

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Can I pull the guts out of a 4r100 off a 5.4 and put them all in my 7.3 4r100???
Yes, you can. It will all fit. It won't last long at all, though. The 5.4L parts are nowhere near strong enough to last behind a 7.3L.
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post #6 of 10 (permalink) Old 05-02-2017, 01:59 PM Thread Starter
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Will the guts out a E40d work inside the 4r100????

2001 Ford F250 4x4 CrewCab 7.3 Automatic, 4 inch MBRP exhaust, Diablosport Predator, Edge evolution (monitor only), Cold Air intake,
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post #7 of 10 (permalink) Old 05-02-2017, 02:14 PM
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Yes, they should. I've never heard of anyone doing this, usually it's putting the guts of a 4R100 into an E4OD, but I don't know of any reason it shouldn't work.
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post #8 of 10 (permalink) Old 05-02-2017, 02:15 PM
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Most of the internals are the same, but not all. There are some sensors on the 4R100 that aren't on the E4OD, so it would follow that the tone rings or whatever the sensor feeds off of wouldn't be there in the earlier transmission. PLUS, a lot of components in the E4OD were aluminum that were upgraded to steel in the later 4R100s. I wouldn't want to go backwards on reliability by putting in the weaker components.
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post #9 of 10 (permalink) Old 05-02-2017, 02:17 PM Thread Starter
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Thankyou guys for all of your help,

2001 Ford F250 4x4 CrewCab 7.3 Automatic, 4 inch MBRP exhaust, Diablosport Predator, Edge evolution (monitor only), Cold Air intake,
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post #10 of 10 (permalink) Old 05-02-2017, 09:41 PM
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Quote:
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it would follow that the tone rings or whatever the sensor feeds off of wouldn't be there in the earlier transmission.
Oops! I forgot about that. E4OD internals will NOT work in a 4R100.

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PLUS, a lot of components in the E4OD were aluminum that were upgraded to steel in the later 4R100s. I wouldn't want to go backwards on reliability by putting in the weaker components.
Yep, that's true, too.

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