Question1991 Mitsubishi Mighty Max 3.0 V6
Randomly dies for no reason. When it does, there's no spark. Only time you can troubleshoot it is when it decides to crap out. Ignition is powered up with engine control relay, just no sparky. With no spark we've ruled out the coil, igniter diode thingy (that fires the coil), and most every connection including the ECU.
The distributor is an optical unit with power in, ground out, and two signal wires out to the ECU. Any idea what to test for on these wires next time it's dead?
Absolutely nothing in the FSM on testing or troubleshooting the distributor.
I'm assuming it's not the ECU, mainly because my experience with them has been go-no go, not slow death. Bad assumption? Any help is appreciated.
AnswerJim: You know don't you that Mitsubishi farmed out the building of their computers to another company which did not build very good ones. With time a piece in those computers will start to leak into the computer and it slowly kills off the computer. So I would bet you have one of these computers, that piece is leaking into the computer and slowly killing it off. You need to either have your Mighty Max coded, any AutoZone will do this for free or find a shop that can hook your Mighty Max up to their computer, it will then kick out on the paperwork as to what is going on. Or else get a repair manual for your Mighty Max and a voltmeter, Sears sells some good ones for not much money. Useing the repair manual as to know what readings your should be getting start with the battery working your way around the engine till you find the problem. But I bet it is the computer, but that is only my idea. Hope this helps and good luck! Linda
