My 85 4runner is really screwing up. It runs good when its cold. But as soon as it starts to warm up the check engine light will flicker on and off. There is no rythm to it just random flashes. But thats not the actual issue. The real issue is when it does that flicker i go to push the throttle and its none responsive for a moment then it sounds as if its flooded. Then a few moments later it will stop sputtering and red line but usually continues to sputter even after that. I get a cloud of BLACK smoke and you can smell the unburnt fuel. I have replaced mass air flow sensor, coolant temp sensor. What else could it be? Throttle position sensor? Ecu going bad? I am at a loss.

 

You did not indicate if there were any code(s) stored in the ECU, but they may tell you what is going on:
- http://www.4crawler.com/4x4/CheapTri...CheckConnector

 

has some simalar issues not to long ago, however i could throttle out of the sputtering, but i was running extremely rich, mine turned out to be my ecu had gone on me...

 

The three things i would check are the TPS, 02 sensor, and the idle air control valve.