'95 dies when clutch disengages from trans

[TNflyfishn]

I just rebuilt my np231 this weekend and everything works fine, EXCEPT my speedo sensor won't do anything and frequently and seemingly randomly when I depress the clutch while the jeep is rolling (pulling up to a stop light) it will die. Only seems to do it in 2nd and 3rd so far. I'm stumped.
:flamemad:

 

[shortxjdoug]

Sounds like an iac issue.... did it set long while you did the case? My ranger sat for a month when I did the heads and when I went to start it again the iac was shot and it wouldn't idle right

 

[TNflyfishn]

It sat for about 36 hrs total. I just drove it and doesn't do it in 1st, 4th, or 5th and mainly happens downhill. But, since the idle is kind of erratic right now, that's definitely a good possibility.

 

[TNflyfishn]

It threw OBD-I codes 12 and 15

12 - Direct battery input to PCM was disconnected within the last 50 Key-on cycles.
15 - No vehicle speed sensor signal detected during road load conditions.

Neither of those should cause a stall though, should they?