Torqueflite Trouble

[TetanusShot]

Was on my way to the alignment shop yesterday and the engine was running better than ever in the cool weather. So, I turned onto the highway, yanked the column shift down into 1 and let 'er rip. Shifted into 2 at 6grand and the car was really moving. When I went into 'drive' though, the motor revved to the moon almost like it was in neutral! I quickly let of the gas and looked at the tach needle as it wooshed by the 6500 mark. It could have been on the edge of 7k for all I know, yikes. Luckily nothing was broke, spun, or bent (as far as i know) and the transmission worked normally afterward.

So, what the heck happened here? Is the trans at it's limit of what it can hold? Why would hold fine in 1 and 2 but not 'drive'?

 

[mopar 3 B]

You checked the fluid level?

 

[440beep]

How tight is the column shifter? Might it have slipped partially to neutral?

 

[not so famous bob]

How tight is the column shifter? Might it have slipped partially to neutral?

band adjustment ?

 

[TetanusShot]

I check fluid level regularly and the linkage is adjusted properly (its the second thing I checked). I suppose the band could need readjusted, I've run this transmission for about 15k miles but the parts aren't new. They did about 60k in a motorhome previously.

 

[oldbee]

Band is for 2nd, probably direct clutches are going. KEEP AWAY from 6500+!!!!! lol. You may still get some miles out of it.

 

[oldbee]

If fluid has never been changed, you might want to drop pan over the winter& adjust bands & see how much garbage is laying in bottom of pan. Partially plugged filter could lower operating pressure in trans although low press is first noticed in reverse. That's where the highest press is used.

 

[dvw]

High gear clutch could be on the way out. But my bet is the linkage is sloppy and the manual valve was between 2nd & 3rd.
I went down this trail with my push button o my race car. Easy to check. Run it through the gears with the shifter in D. If it slips it needs to come apart.
Doug

 

[oldbee]

Dvw could be right, but didn't those cable push buttons have more slop than the newer model?

 

[dvw]

Dvw could be right, but didn't those cable push buttons have more slop than the newer model?

This is the first one I had an issue with. The cable hole was to big on the shifter end. Created about .080"-.100" slop. That was enough to make some scary passes in my 9.0 car. During the 2-3 shift either the motor went on the limiter or it locked the wheels when it was momentarily in 2nd and 3rd gear at the same time. Made a bushing for the shifter pin, problem solved.
Doug