trans problem
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8th Gear
Joined: Jun 2025
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trans problem
Hi y'all, i just joimed and have a question..i have a99 f350 sd with the 6.8 and 4r100, it has almost 200k on it...2 days ago i was pulling a trailer that had maybe 1000 lbs on it, i noticed that the truck wasnt shifting right, then going thru town , when i had to stop at red lights, i had to rev it up to get it to go and it finally wouldnt shift out of first gear...when i got home , i also found out i had no reverse at all...the fluid is full , doesnt smell burnt and is still a cherry red color.....im not much of a mechanic, so i need to know if its toast, or if it could be something fairly cheap to fix ...im disabled and cant afford to spend much on this , thanks !!!
FTE Community Team
Joined: Dec 2023
Posts: 8,855
Likes: 4,266
From: sussex county, nj
welcome to this site, the problem is major internal issue ,which sadly with 200k on the unit ,means your are looking at a trans rebuild , . only you alone can make up your mind about how to proceeded with a costly repair
good luck
good luck
FTE Community Team
Joined: Dec 2023
Posts: 8,855
Likes: 4,266
From: sussex county, nj
a reflash NO, a diesel trans and convertor will not work on a V10 , if you have 2wd you need a 2wd trans if it's a 4x4 you need a 4x4 as the output shafts are different lengths'.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
That trans is done.
It needs to be rebuilt or replaced with another trans from a V10. A 5.4L trans will physically bolt up, but doesn't have the clutch plate count to last long at all behind a V10. A diesel trans will not bolt to a V10.
It needs to be rebuilt or replaced with another trans from a V10. A 5.4L trans will physically bolt up, but doesn't have the clutch plate count to last long at all behind a V10. A diesel trans will not bolt to a V10.
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Thread Starter
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8th Gear
Joined: Jun 2025
Posts: 8
Likes: 8
Thanks y'all for the help !!! Gotta admit, i really miss my '82 bronco at this point , had the 460 and c6 in it , ahhhh the good old days lol....
If any of y'all are close to west central florida and would be interested in buying the truck, i am considering selling it ....
If any of y'all are close to west central florida and would be interested in buying the truck, i am considering selling it ....
Last edited by Tigman65; Jun 24, 2025 at 01:06 PM.
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8th Gear
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FTE Community Team
Joined: Jan 2019
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Sorry to hear that.
I wonder if it's something dumb like the filter isn't sealing or something.
When was the last time the transmission pan was down?
What does the transmission's maintenance history look like?
I wonder if it's something dumb like the filter isn't sealing or something.
When was the last time the transmission pan was down?
What does the transmission's maintenance history look like?
Thread Starter
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8th Gear
Joined: Jun 2025
Posts: 8
Likes: 8
I have no idea what the history of the truck is , it appears the trans was taken out at some point , i saw a couple of bolts missing , and there is some kind of yellow sticker on the bottom of the trans, but its impossible to read much of it
FTE Community Team
Joined: Jan 2019
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It might make things worse also. I figure since you're thinking of selling it because of a major existing issue, it might be worth a roll of the dice to see if it is something big and easy. 
Boilerplate: Results may vary, past performance is not necessarily a predictor of future results, professional driver on a closed course, use at your own risk, do not consume with alcohol, void where prohibited, warranty void if seal is broken, adult supervision required, all rights reserved, yada, yada, etc.
Boilerplate: Results may vary, past performance is not necessarily a predictor of future results, professional driver on a closed course, use at your own risk, do not consume with alcohol, void where prohibited, warranty void if seal is broken, adult supervision required, all rights reserved, yada, yada, etc.