Why does my trans suck?
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Laughing Gas
Joined: Jun 2005
Posts: 820
Likes: 11
Why does my trans stink?
I have a 2001 F350 4x4 SRW with a V10 and a 4R100 Auto. I bought my truck with 60,000 +/- miles on it. At 75,000 the trany ate it self alive. The only thing that could be saved was the case and some hardware. I had it rebuilt by a reputable shop, only because I had just moved three states south and didn’t have time to do it myself, and they told me that they use “all the best parts available.” After the rebuild the trany acted OK, and as good as it was before, but I wasn’t very happy with it. I installed a Transgo shift kit and it helped but still it didn’t want to act right. The thing always seems to be confused; down shifting at the wrong time or into the wrong gear, sometimes holding a gear too long, sometimes up shifting too soon, slow shifts that seem to slip and then slam into gear, and a bunch of other crazy stuff that’s kind of hard to explain. I would blame it on the computer control but don’t know how to fix it. I was wondering how many of y’all are experiencing the same thing. Has anybody found a solution for this? I work my truck pretty hard on and off road and planning a supercharger install this winter. I would hate to toast another trans. I’ve also notice that there are a lot of shops building these things for hot rodded diesels. Does anybody know of a good shop that would build a gas version if I do have to get another one.
Last edited by captchas; Jul 29, 2005 at 07:43 PM. Reason: profanity removed
Moderator
Joined: May 2004
Posts: 6,525
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From: Home Base Nebraska
You can try www.atsdiesel.com they rebuild them for both gas ans diesel motors. They come with a 3 year 100K warranty, I haven't used one but a Friend of mine has so for he likes it.
Denny
Denny
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
The tranny relies on the speed sensor on top of the rear diff housing, to tell when to shift...
Does your speedo bounce or is it off by a lot?
It's a known thing to see the speedo bang against 0 while driving and have the tranny shift all sorts of funky ways...
Does your speedo bounce or is it off by a lot?
It's a known thing to see the speedo bang against 0 while driving and have the tranny shift all sorts of funky ways...
Junior User
Joined: Apr 2002
Posts: 78
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From: Monroeville, AL
I understood that Brian's would only do diesel trannies. Something about the bolt pattern? My odometer showed 23,519 when my 4R100 bit the dust! Fortunately, I was under warranty; got the Ford rebuilt and it's been better ever since!
Good luck!
Jim
Good luck!
Jim
Posting Guru
Joined: Mar 2002
Posts: 1,942
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From: Willamette Valley, Oregon
I would check out the MLP/TR sensor on the drivers side of the trans. If it has moisture in the connector then it is shorted out and could cause your shifting concerns and may or may not set codes. If it is the MLP/TR sensor, when you replace it add dielectric grease in the connector to water proof it!
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Laughing Gas
Joined: Jun 2005
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Thanks for the reply guys. This has been a problem since I bought the truck. The fact that I had the trans replaced and it didn’t change much leads me to believe that it is electrical. My speedometer doesn’t bounce around and, according to the speed checker sign things that the cops put up all over town, it’s right on the money. I’ll be under the truck tonight fixing a power steering leak so I’ll check the MLP/TR sensor. It is very possible there’s water in it because I not shy about dipping the truck in a mud puddle every now and then. Does anybody know of a “4R100 expert” in the Tampa Bay area that could check my PCM?
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Thread Starter
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Laughing Gas
Joined: Jun 2005
Posts: 820
Likes: 11
Here’s something interesting. I remove my battery cables this morning while I worked on my steering. It was undone maybe four or five hours. After I finished and hooked the battery back up I went for a test drive. It was a different truck all together. It could be all in my head but I swear it drove better. I am a very aggressive driver, with a very heavy foot. Does the computer think it’s smarter than me and detuning itself as a protection means? Is OBD that smart? Like I said, I maybe imagining this. I’ll drive around for a little while and see if it changes. Please, feel free to make fun of me if I’m crazy.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
Here's an opinion on this, doesn't mean nothin' just things I've heard here...
There have been certain posts where it seems the computer gets pigeon-holed, as in, it "adjusts" so far out of bounds that it's crazy ...
Some people with pinging V10's have reset their computer only to never have the problem again.
As a software weenie, I can see where yours may have gone in the opposite direction, and run like you have the crappiest gas known to mankind...
I can't imagine it affecting the tranny that much, but who knows... anything is possible.
As in anything Microsoft, always reboot before calling customer support
There have been certain posts where it seems the computer gets pigeon-holed, as in, it "adjusts" so far out of bounds that it's crazy ...
Some people with pinging V10's have reset their computer only to never have the problem again.
As a software weenie, I can see where yours may have gone in the opposite direction, and run like you have the crappiest gas known to mankind...
I can't imagine it affecting the tranny that much, but who knows... anything is possible.
As in anything Microsoft, always reboot before calling customer support
Posting Guru
Joined: Feb 2004
Posts: 1,388
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From: Saratoga, NY
I'm not sure about Fords in general but some GM trannys have a shift learn procedure that can be performed if it shifts erratic. It requires a Tech 2 scan tool, and 30 minutes of driving. You might try calling up a dealer to see if this is the case with your truck if nobody can say if this is true about Ford trucks here. On the other hand if everything works ok and your happy with the way it shifts then don't worry about it.
Guest
Joined: Nov 2004
Posts: 7,988
Likes: 55
From: north west new jersey
Originally Posted by jokerforever
Here’s something interesting. I remove my battery cables this morning while I worked on my steering. It was undone maybe four or five hours. After I finished and hooked the battery back up I went for a test drive. It was a different truck all together. It could be all in my head but I swear it drove better. I am a very aggressive driver, with a very heavy foot. Does the computer think it’s smarter than me and detuning itself as a protection means? Is OBD that smart? Like I said, I maybe imagining this. I’ll drive around for a little while and see if it changes. Please, feel free to make fun of me if I’m crazy.
Posting Guru
Joined: Mar 2002
Posts: 1,942
Likes: 3
From: Willamette Valley, Oregon
alot of time it will take some driving cycles to get codes to come back and problems to resurface. If the trouble comes back with no check light flashing, check the MLP/TR sensor for moisture.