Transmission Slipped out of Gear?

[unclebuck]

In my '04 I was excellerating onto I-4 and at about 65-headed toward 85 or so when I felt something like a small bump (I didn't hit anything) and the Trans let go, the engine reved way up. I got out of the gas immediately, coasted to the next exit and when I stopped at the light, I was in 1st gear. I took off, slowly, it shifted into 2nd and when it got to about 35 MPH it slipped out of gear again. I limped home with only 1st & 2nd gears.
I do have a Reinhart Tune in an Xcalibrator II, stock gears. Only Intake and Exhaust mods + Chip.
I have never 'buried the needle', drag raced or done burnouts (am I boring or what?!) I do jump on it once in a while, for medicinal purposes only, but don't get it out where I can really do much MPH. I have 10,150 miles
HELP!
Any ideas? Happen to anyone else?
I'm waiting for the tow truck to take it to the dealership right now.
NOT the way I wanted to spend Saturday morning.

[OneBADLsE]

Sounds like an Overdrive band is slipping

[MACFORD88]

Direct Clutchs ?

[jim geary]

Sounds to me as if you need to get out and run it more.:)

[unclebuck]

Thank you for the advise.
I do need to run it more.
As soon as I limped into the driveway, I got my Xcalibrator II out and put the Stock Tune back into it. Then ran it a little just to be sure.
I am one of many with this same tune, so is this just the luck of the draw for me to have this problem, is it not enough miles, is it the tune?

I have had the same tune for a couple years. I have never looked into seeing if Reinhart or SCT have made any improvements I can download.
Anybody have any suggestions about Updates to an old tune?
Reianhart's was closed today by the time I started messing with this thing so I couldn't call them.
Does SCT have a website and downloads?
I confess, I do take it out of Overdrive a fair amount of the time. Could that have something to do with the problem do you think?

[Marauderman]

I confess, I do take it out of Overdrive a fair amount of the time. Could that have something to do with the problem do you think?

Althought you have the '04 Tranny, and me the "03, contrare to whomever, when you want to go WOT or if you anticipant doing so, you should down shift it to 3rd by taking it out of 4th(OD)......tranny's are always better going from 3 -2 than 4-2.....I don't think that was your problem--I twisted by tranny's tail-shaft into two pieces--but the '03 tranny were not strong anyway-----the '04's (stock) were suppose to be stronger--My opinion is that all the stocks were a bit fragile-----to a point--so if any build-ups are taking place you shoud consider the tranny as well----no problem since mine was fixed......hope all works out well for you my friend-----------Tom

Post edit point:--You might want to use the search button for tranny problems--slippage or breakage---you can get alot more info---

[ctrcbob]

I know this is a dumb question to ask, but are you shure that the transmission has enough fluid?
Sounds like mine when I lost some trans fluid.

[juno]

Yes, check the fluid before you go too far. And the OD band will only affect you in OD. 1-3 will still work if your OD band is bad.

[Rauderboi]

Just got my X Cal2 Friday and from 3rd to 4th, 4th to 3rd, ( that in between gear) it feels as though my transmission is going to fall out. I have played with it and every combo of set ups. I can't figure it out and it's always the same. like the transmission just can't make up it's mind which gear to be in.
I want it back to stock.

As a foot note, I have changed all the parameters under shift pressures but not under the diff't WOT settings. What are those settings for? There wasn't a manuel with mine, and the CD that came with it does not explain it either.

I love the power but can't handle the way my car now shifts.

[juno]

Shifting hard is good.

WOT are the shifts at wide open throtrle, as opposed to partial throttle. You may also have the torque modulation settings to change, try going to zero on those.

[MENINBLK]

Just got my X Cal2 Friday and from 3rd to 4th, 4th to 3rd, ( that in between gear) it feels as though my transmission is going to fall out. I have played with it and every combo of set ups. I can't figure it out and it's always the same. like the transmission just can't make up it's mind which gear to be in.
I want it back to stock.

As a foot note, I have changed all the parameters under shift pressures but not under the diff't WOT settings. What are those settings for? There wasn't a manuel with mine, and the CD that came with it does not explain it either.

I love the power but can't handle the way my car now shifts.

Did you save the stock tune prior to changing the values ?

[Zack]

Sounds like the 2-3 accumulator piston is damaged.
This is a common failure associated with 4r70w's.
Only a small piece of the outer seal has to be damaged for 3rd and 4th not to work.
This just happened to me a few weeks ago on my KB car. Although I have not ripped it down to prove this actually happened, Im 99.9% sure its the case.
The valve body needs to be dropped down and the accumulator needs to be replaced.

[Rauderboi]

So... each time I make a change I need to reset everything back to stock first? Then, no I did not.

If my accumulator piston is damaged, it just happened then, because it was fine before the tune.

I did call yesterday and was told there may have been an era in the tune, and to call back sometime Thursday. We should be able to resolve it then.

[Zack]

Sonds like a programming error Rauderboi.
Just send it back or get a new file via Extreme tune.

[Rauderboi]

Yep. I'll see what happens Thursday.

[rumble]

Yep. I'll see what happens Thursday.

What happened?

[Rauderboi]

A new program is being e-mailed to me today. I hope. I'm anxious for this car to run the way I had hoped. Right now I'm thinking I want my car back to stock. Around town driving, I MUST turn the overdrive off. Anything in that 30-40 mph.range the car just doesn't know which gear or direction it needs to be going. It goes into 4th just fine, but if you back off just a little bit into 3rd and then give it a little more throttle back into 4th... hold on. You'd swear the underneath of your car was going to fall out, including the motor. No I'm not making this sound worse than it is.

[magindat]

Just got my X Cal2 Friday and from 3rd to 4th, 4th to 3rd, ( that in between gear) it feels as though my transmission is going to fall out. I have played with it and every combo of set ups. I can't figure it out and it's always the same. like the transmission just can't make up it's mind which gear to be in.
I want it back to stock.

As a foot note, I have changed all the parameters under shift pressures but not under the diff't WOT settings. What are those settings for? There wasn't a manuel with mine, and the CD that came with it does not explain it either.

I love the power but can't handle the way my car now shifts.

Who'd you get it from? Get them to send you the .xtr file.

[magindat]

So... each time I make a change I need to reset everything back to stock first? Then, no I did not.

If my accumulator piston is damaged, it just happened then, because it was fine before the tune.

I did call yesterday and was told there may have been an era in the tune, and to call back sometime Thursday. We should be able to resolve it then.

That was for buck. You are getting confused.

Mods, can you move Rauderboi's info and replies to a fresh thread so we can help them both without confusion?
Thanx

[magindat]

Hey buck, any more news?

[Dennis Reinhart]

Just got my X Cal2 Friday and from 3rd to 4th, 4th to 3rd, ( that in between gear) it feels as though my transmission is going to fall out. I have played with it and every combo of set ups. I can't figure it out and it's always the same. like the transmission just can't make up it's mind which gear to be in.
I want it back to stock.

As a foot note, I have changed all the parameters under shift pressures but not under the diff't WOT settings. What are those settings for? There wasn't a manuel with mine, and the CD that came with it does not explain it either.

I love the power but can't handle the way my car now shifts.

First of all SCT does not send out a manual with the Xcall but I can send you one. Changing the paremeters with out knowing what they do can make a problem even worse, did the Xcal come from us, if so its a easy fix, just give us a call.

[Todd]

Buck,


You could have smoked the direct clutches as others have said. And you could have broken the stub shaft. I did both. And had simptoms EXACTLY like yours. All the way down to the 1 and 2 ok but free rev after that and the bang or crack when it first did it.

It has nothing to do with your tune as I think you already know.

My advice, get ready for a good rebuild. By someone who knows trannies. Dont just trust the local aamco. Find a local Mustang club and see who they used with success. (no knock against aamco as I am friends with a aamco owner)

I had mine done by a friend (not aamco) here who knows a lot about the trannies and some tricks that have worked long term.... Used all top quality parts, including the Lentech stub shaft with additional splines and associated drum. Isnt cheap and takes a little while to get but if that IS your problem, it is worth the price for the assurance.



Good luck bro.

[cyclopsram]

manuel comes to pick da lettuce.. Manual is da book...do not break your brakes when you excell at accelerating...Jane Shure was an actress of that I am sure...sorry, but my mind goes crazy at da spellin...

[Dennis Reinhart]

I did not see where any one thought it was tune related, its not period, Tom drove the car for some time, before having this problem, prior to this the shifts were crisp and firm, this one afternoon he dropped the hammer against a Mustang, and its apparent it had some sort of internal failure, the values we use are in thousands of Marauders and CV T Birds and Mustangs, the 4R75W as well as the 4R70W can be improved, one simple part is the spiral snap ring which is far superior to the OEM snap ring which can and does pop off, taking out the transmission, we have found over the years upon tear down and inspection the 1/2 or the 2/3 accumulator piston lip rolled, right from the factory this will burn up the clutches, the stock over drive band should be replaced with the new Kevlar band, I have rarely seen the stub shaft break but we do replace it when we build transmissions here, now this transmission is still in warranty and will be either rebuilt or replaced, I spoke to Tom today, and I am going to send him the Kevlar band and spiral lock snap ring, and he is going to see if the Tech will install it.

[Rauderboi]

OK. Same thing is going on. Downloaded the new program, with a little confusion but with the help of a girl in my office who is more computer savvy than I.
3rd to 4th and 4th to 3rd. Bucking and banging in neighborhood and city speeds. At constant throttle, no issues.
Return to stock - shifts perfectly.
I've tried what I think to be all sorts of combinations in the programmer to no avail. (all except the WOT areas of the programmer)
Has anyone experienced anything like this? With all the X Cal2s that have been programmed, and on two boards, and with so many members with more knowledge than I, am I the only one with an issue?
Help?

[Rauderboi]

Dennis, the new re-program works great! No problems with the transmission. Thank you for all your help and persistance. I couldn't have asked for better service. We will do business again.

[Todd]

Buck, any news on what your problem was??