My car runs good until my check engine light come on I have changed the fuel pump the distributor spark plugs spark wires the idle air control valve the rotor button in all but it will not stay running when i let off the gas the car sometimes dies on me while driving but cranks right back up

 

A clue of what year and engine might help. The check engine light means there is a problem with your fuel system. There will be codes store in the ECM (computer) that will held track down the problem or at lease give you a direction.

 

It's a 1991 camaro rs 5.0tbi it was throwing out all types of codes

 

That is easy it has all types of problems.

You need to understand that repairing electronic fuel inject is very complicated. Most dealerships have levels of techs. Automatic transmission repair and fuel injection repair are the top level guys. Even if you only had one code in most cases all you will get in forums is people telling you I had that code and it was this. That does not mean that is what is wrong with your car.

There is no way anyone can help without those codes. Based on what you have said so far all I can say is check all the fuses and check and clean all the ground related to the ECM.