Ok so i'm going crazy and this is a last ditch attempt to fix this truck!

i have a 96 rodeo with a 3.2
The truck starts up perfect and runs good when cold. After about 5 minutes of time warming up if you put it under load around 2-3k rpm it will start to cut out. This can cut out when not under load but it's not usually as noticable. I've just about replaced every part i can imagine and am getting tired of throwing parts at it. It has NO CEL which is even more frustrating.

sofar i have replaced
Throttle posision sensor (new)
Idel air control valve (new)
mass air (used from running truck)
all spark plugs replacedd (new)
Fuel pump (new)
Fuel Filter (new)
ECM (used from running truck)

As you can see i've got way to much into this now but still have the problem.

Please what else can i check or test?
Thanks for any ideas!

 

Have you check timing to make sure it has not slipped a tooth or two? Also, you replaced the ECM, or the ICM, the ignition control module? I am asking to see if you have had the ignition module checked? Also, if it is under the 5 min of warm-up time does it pull fine at 3k or above rpms?