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transmission shifting erratic, gone to the DC Doctor

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Just a note to you guys with a 48re in your trucks that do the 1-3-2-3 wahtoosie shift, I took my truck in to the dealership today. They ran some test and came up with low line pressure says the factory rep.

They are contacting 5 star ? or something like that find a fix.

More news tomorrow when I get it back, I hope!

Anybody else been down this road?

Previously they changed the govenor and throttle position thing.
 
Mine does the same thing. I'm just waiting on them to come up with a fix. When you get on it though it does shift smooth but in town it does the hunt thing. Keep us posted.
 
My brother in law bought a 06 and I went with him to pick it up.

He took off from the dealership and the first thing I noticed was how much better it shifted than mine. It can be done if they will just do it.
 
My 06 did it, but you almost had to make it do it at 15-25 mph using very light throttle. If you just drove it you would never find it. Made a couple of data recordings and the pressures were normal. I assumed the electronic throttle pressure was at fault, but the voltages were rock steady when it did it. Valve body and front band adjust took care of it.
 
My brother in law bought a 06 and I went with him to pick it up.

He took off from the dealership and the first thing I noticed was how much better it shifted than mine. It can be done if they will just do it.





KSHALL WHAT DO YOU MEAN CAN BE DONE? I HAVE THE SAME PROBLEM THE HARDER YOU MASH THE PEDAL THE SMOOTHER IT SHIFTS, THE EASIER THE ROUGHER IT SHIFTS



THANKS

J. R.
 
annoying that a new truck does that the easier you drive!Mine does it to so anyone that knows the fix speak up.
 
I had same problem at 30 MPH, under light throttle. I have a suncoast VB and TCin mine. Suncoast went round and round with me on the phone trying to find problem. Finally we changed one of the springs from an orange to a black(in the VB) to change the pressures. So far it semms to have done the trick.



I never noticed it whne my tranns was stock, but i almost never drove under light throttle.
 
DTT should have a fix out in a couple weeks, our dealers are currently testing it and it has fix the problem in all test cases so far. We are also working on making it as easy to install as possible, current install takes between 30-45 minutes.
 
I took the tech for a drive and it took a while for it to do it. When it did he said he saw enough. Well I got it back and they flashed the computer.

Now it is a bunch better it does shift 1-2 pretty good but if your light on the go pedal it will go to 3rd verry shortly after it shifts to 2nd.

Now, if you are a little harder on the go pedal it shifts about right but not as firm as I would like, I dont want it to break out the windows but a good a "firm" shift would be great!

I'll keep ya posted!

P. S. Who makes the "Livestock VB"?
 
DTT should have a fix out in a couple weeks, our dealers are currently testing it and it has fix the problem in all test cases so far. We are also working on making it as easy to install as possible, current install takes between 30-45 minutes.



Thanks Stefan. You guys always come through on the leading edge.
 
I don't have an auto transmission, know virtually nothing about them except for the few I had were expensive to repair and kept having the same kind of problems after x-number of miles, so I went to the manual transmission to be rid of the headaches associated to the 'gear searching'.



Having said that, I thought I would share a little story from a friend. He had a Dodge 2500 with a V10 and an auto transmission. I think it was a 2000 year model. He was one of those not so lucky guys that had a lot of transmission problems, many, many times. I think they replaced his transmission 3 times and worked on it so many times I lost count. When he asked the tech at his dealership WHY this was such a chronic problem his answer was - This model transmission is set up to work at certain pressures, it really was not a truck transmission, they really needed to design a heavier duty transmission that could take the loads/torque that trucks are worked at. He went on to say that it was more of a design for light duty than heavy duty so under loads it worked much harder than it was designed. He inferred that truck guys were on the throttle more, that's why it shifted so hard. Well, my friend was/is what I would call a medium pedal guy, into it, but not WOT stuff. I do not think the billet market was as developed then as it is today, but they did put some kind of VB into it and a few other things too.



So as time has gone on here, the newer trannys seem to be stronger, better shifts under load and pressures, more of a real truck transmission. It almost seems as though they have designed them for the medium pedal guy (or gal) to a heavier pedal driving style.



Now throw the more light pedal user into this, and all this 'gear searching' taking place. The older trannys seemed more suited to the light pedal user, more conservative driver, shifted smoothly with this style of driving habits. The newer trannys are more of a truck transmission, designed for heavier working loads, shift at higher pressures, etc - real workhorses, so when you drive more light pedal they search for gears more.



Just an observation out of me here. I have driven a new auto transmission, test drove it when I decided on my standard transmission. I did notice a little searching when I was light into the pedal, did not search when I was more agressive. At that test drive I wondered if that searching would go away after some miles and break-in. Guess not as it seems to continue doing the same after some miles.



You guys are lucky to have an aftermarket like you do today, at least these issues CAN be worked out to your satisfaction.



CD
 
That is a good thought! I've driven a lot of Ford and Chevy trucks through the years and never did I notice this kind of stuff with their trannys. They seem to shift about right whether you were light or medium or heavy on the go pedal.

If these guys can do it surely DC can do it... ..... Right?
 
My brother in law bought a 06 and I went with him to pick it up.

He took off from the dealership and the first thing I noticed was how much better it shifted than mine. It can be done if they will just do it.



I don't know what year your truck is but my 06 work truck certainly doesn't shift as well as my friend's 03 HO 48re! I had it checked for codes at 3K. Now I have 24K on it and it still shifts erratically in or out of tow/haul. It seems to do a locked shift at times at moderate throttle. Other times it will lug at 1100 to 1200 rpm unless I mash the throttle to make it downshift.

I have just given up until I can get it to another dealer. I shift it manually in town and at speeds less than 60 mph loaded just like I did my 47re before the DTT treatment.
 
DTT should have a fix out in a couple weeks, our dealers are currently testing it and it has fix the problem in all test cases so far. We are also working on making it as easy to install as possible, current install takes between 30-45 minutes.



It's been a couple of weeks. What is the fix?
 
This is NORMAL. The 06 has the capability of locking the T/C in 2nd, 3rd, and 4th gears. What your feeling is the trans coming out of T/C lockup due to acceleration/load.

Rant on:

The dealer has no clue. Your wasting your time and subjecting your truck to the Idiot's that will try and fix something that`s not broke. :eek:

You guy`s need to update your knowledge of your trucks operational characteristics. You need to have a better grasp of what`s really a problem and what`s normal.

To much nitpicking really makes for a bad experience and makes everyone think they have problems too. :{ Rant off::D
 
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