i have and 89 camaro with a 2.6 multiport v6 engine and i can not keep it running for more than 5 min and then i cant get it started again. I have a new fuel pump and fuel filter, i am getting good fuel now through the engine, and plus i am getting great spark so a sensor has to be bad but cant find it if someone has some helpful hints for me please let me know what the problem is or how i can find what the problem is withought spending to much more money

you have a 2.8 multiport injection. take it to a autozone and scan it. trouble shoot the computer. what about timing? check injectors, and egr valve. engine code will tell. autozone scans for free