1992 s-15 Jimmy floods with gas when it reaches operating temp

I have a 1992 Gmc Jimmy with TBI. When the truck warms up to operating temp the tbi jets start richening up the mixure to the point the engine stalls and floods. when the truck is cold it runs great. I have tuned up the truck and replaced: oxygen sensor, IAC valve, plugs, cap and rotor. I dont know what to do next. I am not getting any engine codes either.

Any info would be great.