can i swap the at from a 01 f250sd in to a 99 f350sd - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 6 (permalink) Old 06-01-2015, 02:03 AM Thread Starter
nor
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can i swap the at from a 01 f250sd in to a 99 f350sd

tranny just went out in my e99 f350 no foreword gears just reverse i have a 01 f250 that i rolled can i just swap the trannys with out changing any thing else or do i have to switch out the pcm or some thing else for the tranny to work they are both 4r100 trannys the 01 i had redone about a year prior to rolling it
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post #2 of 6 (permalink) Old 06-01-2015, 02:10 AM
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Re: can i swap the at from a 01 f250sd in to a 99 f350sd

Yes you can, should be a direct swap as long as both trucks are 4x4 or 2x4.


1997 F350 SRW CCLB 7.3 ZF5 4x4
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post #3 of 6 (permalink) Old 06-01-2015, 12:12 PM Thread Starter
nor
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Re: can i swap the at from a 01 f250sd in to a 99 f350sd

my main concern is
The early '99 used an on/off torque converter lockup solenoid. The later trans (and for the rest of the 4R100 run) had a Pulse Width Modulated (PWM) solenoid.
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post #4 of 6 (permalink) Old 06-01-2015, 02:22 PM
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Re: can i swap the at from a 01 f250sd in to a 99 f350sd

That's going to cause some harsh lockups. you need to swap the pump and solenoid bodies to fix this, or live with the harsh lockups.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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post #5 of 6 (permalink) Old 06-20-2015, 02:36 AM
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Re: can i swap the at from a 01 f250sd in to a 99 f350sd

Early 99 should be pwm
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post #6 of 6 (permalink) Old 06-20-2015, 12:43 PM
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Re: can i swap the at from a 01 f250sd in to a 99 f350sd

Early 99 is on/off. It switched to PWM in late 99 and kept PWM for the duration of 4R100 production.

Mark
Former Ford Automatic Transmission Engineer

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson
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