I posted this on another thread for my Xede issues -
I have not had a chance to work on the car until today... today, I really screwed up:
I tightened every T-Clamp on the intercooler piping, and still the idle would not change. I tried to change the idle position screw still idled too high.
So, I tried to search for other ways and went to miata.net. Someone suggested doing the idle adjustment with TEN/GRND jump on the diagnosis box.
Such a simple thing to do (I thought) - Instead I completely fucked up, but jumping GRND to the one next to TEN, I guess B+ from a diagram I saw. The car died almost immediately. I would not start again at all.
I checked all the fuses in the engine compartment fuse box (on passenger side) and even changed the MAIN fuse, still, nothing.
Then, I looked at the XEDE to see if the light is flashing before the car is started (as it should), and there was nothing. I disconnected the Xede and reconnected the stock ECU, still nothing. The car is cranking, but not starting.
Did I fry the ECU? What should I do? I was trying to fix one problem, and started a completely new one!!!