My 78 Dodge Apollo only works if manually shifted

[gica]

I double posted this on a different forum so sorry about that, this is where I should have done it initially.
Something weird happened on the tranny last week. I sort of let someone live in the RV and I did notice that he didn't fully stop the RV before shifting either in Drive or Reverse depending on the case, so the guy calls me that the RV does not go in Drive or Second anymore. It does shift if started in First then manually shifted to Second and then Drive. I remember that in cars it had a governer(or something like that) that handled the shifting. This tranny was rebuilt not too long ago so I don't think it's slipping from wear. I read somewhere that the forwarding band is broken(that was on a truck tranny do these have it?). Any ideas on what's doing it? Thanks in advance.

[rlyons]

Could be the governor,kick down cable or linkage broken or unhooked. Probably not a band if it pulls ok by manual shifting.
Try here.
Dodge page

[gica]

Thanks for the answer , that's what I thought, the kick down cable has always been loose and after it fell off the linkage on the tranny i recently reattached and secured, to the linkage but it looks loose. Funny that it worked perfect and bam no action in Drive and 2nd. As for the governer that usually is a result of the bad shifting which i saw this guy do when shifting from reverse to D without stopping.
I'll check the link don't know which tranny the 78 Apollo 7.2 440 engine has yet. Thanks

[87Rockwood]

The tranny is a 727. The way to adjust the kick down linkage is easy. With engine warmed up but not running hold the gas pedal to the floor and leave it there. Take off air filter and check to make sure that the throttle is fully open. The kick down linkage is then pushed by hand to the rear of the rv until it stops. Now adjust (turn in or out) the slotted end that attaches to the carb until the back end of the slot JUST fits back on to the carb linkage. Done.

[Phobos]

I don't know if 727 has one or not, but if it does, it could be the modulator valve or the vacuum line running to it.
At least that's what it sounds like to me anyway.

[87Rockwood]

Chrysler did not use a modulator valve or vacuum. Its shift points are controlled by the "kickdown" rod/cable position. It controls the line pressure internal to the tranny.