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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Transmission Woes

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Old Jun 9, 2007 | 02:54 PM
  #1  
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Henryjb
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From: Fort Collins, Colorado
Transmission Woes

I swapped engines in my 96 F250 (5.8L 351) with the tranny still mounted on the truck: I used the same torque converter, the tranny worked fine before the swap, but when I finished installing the engine and shifted it (engine off still) from neutral to park, without even trying to start it, it immediately lost a quart of tranny fluid from the bell housing, and continues to trickle now. The engine runs great but the transmission won't shift...could I have destroyed to main tranny seal when installing the new engine? Any advice would really be appreciated at this point...thanks...
 
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Old Jun 9, 2007 | 03:47 PM
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00bucker
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From: south of Hotsprings ar
You have a tough one... Im not sure I understand right... so your saying you took one 351w out and put another 351w in? Is that right or did you switch engine sizes.
 
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Old Jun 9, 2007 | 04:24 PM
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F150xlt
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From: Baltimore
Sounds like you bolted the torque converter to the flex plate and then installed the engine. If that's the case, the torque converter is not seated properly on the transmission input shaft.
 
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Old Jun 9, 2007 | 04:51 PM
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yeah, i installed the torque converter and then installed the whole unit: the bell housing is seated snugly against the engine though...could it still be seated wrong?
 
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Old Jun 9, 2007 | 04:52 PM
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and i swapped one 351w for another due to a thrown rod...
 
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Old Jun 9, 2007 | 05:03 PM
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blueovalboy86
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From: maryland
sounds like the torque converter didnt get set on the front pump shaft. now you get to pull the trans out and build it up!!! even though you slid it on the input shaft, theres another notch you gotta slide it in.
 
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Old Jun 9, 2007 | 09:08 PM
  #7  
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Henryjb
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Don't tell anyone...

So, suppose that, hypothetically, someone installed a new engine with the original torque converter, but failed to put the plug in and immediately lost all of the ATF in the TC....is there a precise amount of ATF that needs to be inside, or will a couple quarts pumped in be sufficient? And also, does anyone know what size bolt the TC uses for a plug? (thread size, especially...)
 
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Old Jun 9, 2007 | 09:16 PM
  #8  
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Bruce R Leech
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From: Mulege south Baja ca. Mx.
Originally Posted by Henryjb
So, suppose that, hypothetically, someone installed a new engine with the original torque converter, but failed to put the plug in and immediately lost all of the ATF in the TC....is there a precise amount of ATF that needs to be inside, or will a couple quarts pumped in be sufficient? And also, does anyone know what size bolt the TC uses for a plug? (thread size, especially...)
now that sounds like something I would do.

go to a good trainsmition shop and they will be able to get you the right one
 
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Old Jun 9, 2007 | 10:18 PM
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CharlesNeff
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<So, suppose that, hypothetically, someone installed a new engine with the original torque converter, but failed to put ....>

Did you do the job by yourself or did Miller Brewing help you out with the job... Laughing with you, not at you. Oh so many of us have been there and done that. As for me, I usually blame anything that happens to me like that on Jim or Jack.
 
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