I have a 2004 LS Sport 2.2 Ecotec that sat for over two years (wrecked and never got around to fully repairing it, only body work). I would go out and fire it up and move it around the driveway every few months, but over the winter I didnt get the chance to start it. Come spring I went to fire it up and now it is running really bad.
First thing I did was put fuel stabilizer and new fuel in it, then also changed the spark plugs. Those didn't help. I pulled the injectors and cleaned them, also didn't help. I went and bought a code reader, its throwing a injector 2 and 3 error. I used an injector amp tester to test for injector pulse. Cylinder 1 and 4 are both getting nice pulse, but both injector 2 and 3 are not getting any pulses.
Next step is going to be replacing the PCM unless someone can steer me in the right direction. Open to any advice.