If it cranks good but won't start, have a helper crank it, while you check
for spark at the plugs and injector pulse. If you have neither one, then I
would look at the crank sensor.
I'm not sure which engine you have? The 3100 may have two separate crank
sensors. As long as the computer receives the 24x signal, the vehicle
should start and run, even without the other crank signal.
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