2003 Ford Expedition Trans Problem

[DrewSkizzle]

Hey Everybody im having some strange transmission problems hoping someone knows the cause, Ive included a link so you guys can see exactly what its doing but for the ones who wanna keep reading ima try to explain ok so when I accelerate and I let off the gas at about 30mph then try to accelerate again it slips now if I accelerate hard from a stop it will speed up to 50-60mph no slipping or anything but starts slipping at 50-60 until i get to below 30mph, now heres where things get stranger if I turn the O/D off and accelerate normally or hard its no slipping I can let off the gas and get back on no problem until i get to about 70 when it should be going into 4th gear and it wont go into 4th gear no matter what i do. Now ive check the fluid its fine no foam its not burnt, or anything and i used FORscan and im NOT throwing any codes, all f this info is demonstrated in the video so hope somebody can help me thanx

 

[TexEx]

Hey Everybody im having some strange transmission problems hoping someone knows the cause, Ive included a link so you guys can see exactly what its doing but for the ones who wanna keep reading ima try to explain ok so when I accelerate and I let off the gas at about 30mph then try to accelerate again it slips now if I accelerate hard from a stop it will speed up to 50-60mph no slipping or anything but starts slipping at 50-60 until i get to below 30mph, now heres where things get stranger if I turn the O/D off and accelerate normally or hard its no slipping I can let off the gas and get back on no problem until i get to about 70 when it should be going into 4th gear and it wont go into 4th gear no matter what i do. Now ive check the fluid its fine no foam its not burnt, or anything and i used FORscan and im NOT throwing any codes, all f this info is demonstrated in the video so hope somebody can help me thanx

Have you seen this video from Brian at fOrd Makuloco? This a problem with a 04 f-150...same transmission & if course 5.4 l3v..hope this helps..

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[DrewSkizzle]

No i havent im watching it now tho thanx

 

[TexEx]

That 4th gear issue looked spot on! If you can get it up on jacks it makes it tons easier..ive changed the trans fluid & laid down a 4 × 8 piece of plywood, with card board & a bus tub to catch..keeps driveway from staining & tempers from flaring[emoji106], its messy.. at least you'll be able to take a look inside..Good luck!

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[Zach Dean]

Hey Everybody im having some strange transmission problems hoping someone knows the cause, Ive included a link so you guys can see exactly what its doing but for the ones who wanna keep reading ima try to explain ok so when I accelerate and I let off the gas at about 30mph then try to accelerate again it slips now if I accelerate hard from a stop it will speed up to 50-60mph no slipping or anything but starts slipping at 50-60 until i get to below 30mph, now heres where things get stranger if I turn the O/D off and accelerate normally or hard its no slipping I can let off the gas and get back on no problem until i get to about 70 when it should be going into 4th gear and it wont go into 4th gear no matter what i do. Now ive check the fluid its fine no foam its not burnt, or anything and i used FORscan and im NOT throwing any codes, all f this info is demonstrated in the video so hope somebody can help me thanx

So I think I can help, I am experiencing about the same thing in my 06 King Ranch with the 5.4. When from a stop my car does not shudder or slip when I let off at about 40-60 mph and get back on again it will shudder and "slip" when I let off and give it more it will shift and go. Anyways I feel like this is the same thing your are experiencing more or less, its you TORQUE CONVERTER straight up. Thats what mine is and I am getting it fixed this weekend! I hope this helps or narrows it down.

The Trans in our cars are beefy and shouldn't need a rebuild check out the Torque Converter first!

 

[DrewSkizzle]

That 4th gear issue looked spot on! If you can get it up on jacks it makes it tons easier..ive changed the trans fluid & laid down a 4 × 8 piece of plywood, with card board & a bus tub to catch..keeps driveway from staining & tempers from flaring[emoji106], its messy.. at least you'll be able to take a look inside..Good luck!

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Ok i have some jack stands but i was thinkin ramps but if jackstands work fine ill do that (wish I had those 2 lift things you put on each side and lift it up)

 

[DrewSkizzle]

So I think I can help, I am experiencing about the same thing in my 06 King Ranch with the 5.4. When from a stop my car does not shudder or slip when I let off at about 40-60 mph and get back on again it will shudder and "slip" when I let off and give it more it will shift and go. Anyways I feel like this is the same thing your are experiencing more or less, its you TORQUE CONVERTER straight up. Thats what mine is and I am getting it fixed this weekend! I hope this helps or narrows it down.

The Trans in our cars are beefy and shouldn't need a rebuild check out the Torque Converter first!

Ok thanx ill look into to that

 

[Zach Dean]

Also I forgot, a total way to make sure you're not actually slipping a gear, turn Over Drive OFF and drive it, then see if it slips if not, then its for sure the torque converter

 

[CaptainKrunch]

So I think I can help, I am experiencing about the same thing in my 06 King Ranch with the 5.4. When from a stop my car does not shudder or slip when I let off at about 40-60 mph and get back on again it will shudder and "slip" when I let off and give it more it will shift and go. Anyways I feel like this is the same thing your are experiencing more or less, its you TORQUE CONVERTER straight up. Thats what mine is and I am getting it fixed this weekend! I hope this helps or narrows it down.

The Trans in our cars are beefy and shouldn't need a rebuild check out the Torque Converter first!

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I know the transmission in my 2003 expy was s h i t. 4r70w. Had to rebuild at about 86k. Not sure what they put in a 2006 but I doubt they are much better.

 

[Jb14]

I had the OD issue around 215k the symptom is different than what you are experiencing from your video. When the snap ring broke I simply had no OD, it would just rev in OD but 1st 2nd & 3rd worked perfectly. With 215k on the trans, I had it rebuilt, and just for reference the clutches had almost no material left on them (though I had no slipping of any kind) so it was good I had it done. One disappointment was that I requested when being rebuilt that I did not want a rebuilt torque converter but they forgot and put in a rebuilt and I had issues with it so I would go new.

Side note: If doing over again I would probably just buy a new trans (like Monster) not much more money. That's just food for thought