Advanced Tech Please Help

I have a 1991 4x4 3VZ-E automatic. I have already replaced the plugs, plug wires, distributor cap, rotor button, air filter, fuel filter, pcv valve, TPS and checked for vacuum leaks. The problem that I am having is at running temperature if I try to start the vehicle it dies, I can apply gas to keep it running. Most of the time in the morning it will run for a little bit. If I come to a stop it dies, I have to keep my foot on the brake and at the same time continue to give it gas. I have also noticed that lately if I am going and just let off of the gas I can hear a relay kick in the dash. I traced the relay down and it is located above the ECU, its labeled circuit opening relay. This problem occurs regardless if the A/C is on or off. As of right now it does not have any stored engine codes before I think it gave me 41 for the TPS, I replaced it with a supposedly good used one with no change so I put the original one back on. I anyone has any ideas please let me know!

Sounds like a fuel delivery problem to me. Clean your injectors and check your fuel delivery volume and pressure.

When you're driving, does it miss? or does it run smoothly?

Hey Brian R...my truck "misses" when slowly accelerating...what do you think this is? It's fine when I am above 15 mph or so....When I idle...it almost cuts off sometimes..93 4runner with 155k miles.

When I'm driving it runs fine.

I had a similar problem that toyota couldn't find, it turned out to be the o2 sensor , you might want to disconnect it and see what happens.
If it runs better replace it, Good luck :2cents:

Is timing set correCtly?

U may have a bad fuel pump after it heats up it loses pressure put a fuel pressure gauge and check that