Background: I followed the Haynes manual directions to check a bad regulator, and shorted the F terminal on the regulator. Car shut off immediately EFI fuse blown. I found the wires from the alternator to the battery and engine fuse box were really bad and fixed them. I traced the EFI circuit short to the computer (ECU). Only the power in and ground terminals connected to the ECU and it blows the fuse. I took out the ECU and found a burned out track inside.
Is it likely that some component (O2 sensor, igniter, coil, air flow meter, etc. Etc) that is connected to the ECU shorted and burnt out the ECU? How can I or should I test the sensor components to see if they have shorts in them before I put in a new ECU and burn it out? Can I hook up the wires to the ECU (power and ground first) one at a time and see if a wire/component burns it out? Is there a better way--checking resistance on each component?
Tuesday, November 22nd, 2011 AT 2:33 AM