1991 Mitsubishi Eclipse GS injectors not firing on 2 and 3, first cleaned and tested injectors they were fine so put them back in and the car ran fine for 15-20 mins then on second test drive 2 and 3 stopped firing again. I replaced the ignition coil and again during the first test drive it ran great but half way through second test drive 2 and 3 stopped firing. Since then Ive checked power transistor, checked crankshaft sensor now questioning if it could be ECU? When I pulled out the ECU saw that it had been replaced with a rebuilt ECU in 2006, could this be the issue again or wiring maybe? any other suggestions

 

2.0 fuel injectors not working - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com