gota quick question
 

ok i have been having a problem with my car not driving and idling right, so i checked my codes and it gave me a code for my afm so i went and got a new one and reset the ecu and it idled and drove right for a second and then went back to not idling or running right. and i am still getting codes 24, 31, and 51. what could my problem be. any help will be greatly appreciated, i have been trying to figure out this problem for quite some time now. thanks in advance

have you checked for vacuum leaks? that can cause the screwy stuff you have described.
is everything hooked up properly? are the wires for the afm damaged or melted? is it the right part?

could my problem be that my wiring harness is very brittle and whenver i mess with a wire the wire breaks from being so corroaded and green on the inside of the wires. the wires going to my afm are almost broke (damaged) so could this be my problem

yep..that for sure. you have to fix the obvious things first...

ok i just repaired the wires on the afm and put new female terminals on them and now the car is still doing the same thing it was doing before. i cant figure out what the problem is and soemtimes it wont even start. what could my problem be. any help will be greatly appreciated. i wish there was someone near by who could come and help me figure out what hte problem is.

Check the timing. mine wouldnt run right until i reset the timing correctly. It should be at 10 degrees.

ok i finally got my car to run again. all i needed was a new wiring harness throttlebody tps and coolant temp sensor. got all of these parts in last night within 3 hours. it took me 3 hours to take out the old harness remove all the necessary intake pipes, throttle body, upper intake manifold, old wiring harness, temp sensor, and i even romoved the fuel rail and changed out my fuel injectors, and put all the stuff back in its original place. i started at 8:00pm and finished at 11:00pm. and the thing that makes me proud is i took out and replaced all these parts all by myself. i appreciate everyones help, i could not of figured out the problems if it wasnt for my fellow supra owners.
but the car seems like it could run better, but i'll worry about that later, have to get a couple of kinks out of it, but im just glad its running.

Did you replace the fuel injector insulators? Those rubber things that go inbetween the injector and cylinder head. Did you replace the o-rings? The rubber o-rings that go on the injector inside fuel rail.

What did you torque the upper intake manifold to? Did you clean all of the stuck on gasket material off of the mating surfaces?

You said you changed out your fuel injectors, what did you swap them with?