2 fuel injectors not working and I dont think the problem is the injectors. If the problem is not in the wires, what controls the injectors? 1990 chevy beretta GTZ 2.3L

It's time to find the ECU (engine control unit) it controls the trigger and duration of the injector signal. If you closely evamine the wiring on the injestors you will note a common colour (ie black) and the other may also be black but will have a trace colour on the wire ie black with a thin red / green/ blue etc (TWO COLOUR) stripe to identify its unique signal from ECU. You can chec the output trigger/signal from the ECU to your problen injectors ,, NO signal = No injector opening , change ECU Good luck

What engine do you have? the 3.1 the injectors are all wired togther, so take a test light and check the plugs on all of your inj. use a separate ground to check the hot wires, then use a positive connection to check the ground wires. if you have power to all, it is probably the inj., the 2.0 is the same, the 2.2 or 2.4 may have a different inj system, but you can check the wires the same way. the different system works off of a cam sensor, but if it didnt work no inj would work at all. it then feeds into the ecm (car computer). but i bet its either a wire issue or a couple of bad inj.