WOW!! Lots of information here.I recently purchased a 91 Tracker,which need lots of work,I drove it home without any problems.A friend stops over 2 days later and I go to start it up so he can see how well it runs and it will not start.

I too have the constant clicking relay by the fuse box and the continuous clicking from the vacuum thingy.I have gas right to the TB but no injector pulse.It appears that somebody has already run a wire from the coil to injector for power,so I'm assuming that was to bypass the ECM problem.Should I be looking at the ECM or am I missing something else?