Yep, either that or the main relay failed, fairly common in early Miatas as well. The INJ fuse powers the ECU and a host of other devices.I'm pretty sure that is the case.
Her car spontaneously died so the O2 sensors, throttle position sensor and transmission fluid temp sensor may all have failed.
Yep, either that or the main relay failed, fairly common in early Miatas as well. The INJ fuse powers the ECU and a host of other devices.
The "ground" return at pin 91 is not the same as chassis ground, BTW. For a quick test one can ground the orange wires to chassis ground to see if there is an open circuit but I wouldn't run it that way; the ground loop created can make the ECU do all kinds of funny things.
Loss of power to the ECU can make engine quit suddenly.
I was wondering about that but I didn't know if the sensor ground is even connected to chassis ground
I wonder if there is continuity between pin #91 and the ECU ground?
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The "ground" return at pin 91 is not the same as chassis ground, BTW. For a quick test one can ground the orange wires to chassis ground to see if there is an open circuit but I wouldn't run it that way; the ground loop created can make the ECU do all kinds of funny things.
The "ground" return at pin 91 is not the same as chassis ground, BTW. For a quick test one can ground the orange wires to chassis ground to see if there is an open circuit but I wouldn't run it that way; the ground loop created can make the ECU do all kinds of funny things.
I don’t want to spend the money if it doesn’t seem like it’ll do anything but if it could then i’d be willing to. just wanted to get your guys take on it