on the 2000 mistubishi eclipse gt 6 cyl. HOW DO TELL IF THE ECU is bad VS the PCM? The ECU being the larger of the 2 components is the computer, where the PCM is much smaller (about 2"x2"x2") or about, and is more for the engine and trans to work together better and will also shut down the car if stolen? My car will start and keep running if I manually keep feeding it gas into the injector line, otherwise it shuts off. SO, KEY IS PROGRAMMED SO IT'S EITHER THE PCM OR ECU? THANKS SCOTTY!!!

BTW, fo other help, Here is an article that I found:

ONLY ON THE 2000 MITSUBISHI ECLIPSE DO U HAVE TO REPLACE BOTH THE ECU AND PCM AS THEY ARE MIRRORED TOGETHER OR U HAVE TO GET A BRAND NEW PCM AND HAVE IT PROGRAMED TO THE ECU. THE KEYS MUST BE RE-REGISTERED PER INTERNAL LETTER FROM MITSUBISHI MOTORS NO: TT-133-13-002 DATED 12 2006 You cannot reprogram the ECU or the PCM to match up once the have been mirrored. They electronically stay together as a pair forever. YOU CANNOT REPROGRAM A PCM FOR THIS YEAR OF MITSUBISHI.
This might be pertaining to all Mitsubishi 2000 yr models?

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ScottyKilmer
ScottyKilmer

Editor

it is very hard to figure that out without a dealer level scan tool and years of experience. But on a mits, it's almost always the ECU from my experience. but, on your model, you'd have to change both anyway. The later year ones only have one unit that comprises of both put together

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