ive got a 91 4x4 truck and the a/cs leaking inside the cab instead of outside on the ground..and it starting to smell..and tips?

 

Assuming you are talking about the condensing water dripping from the A/C evaporator inside the truck (was not clear in your post), it is probably a clogged drain tube. Clear it out and see if that helps. I have a writeup on doing that (not on a Toyota, though) on the web page below:
- http://www.4crawler.com/Diesel/Cheap...ml#ACDrainTube

 

yea its leaking out of the evaporator, thanks man i hope thats it

 

did some investigating im pretty sure its coming out of the heater core,which im pretty sure is inside the black box to the left of the air damper, anyone had this happen to them?

 

Yes, I have. I went to local pick and pull got a new core, couldnt figure out why it leaked (what failed). But the used one cleared up my troubles.