when it doesn't start you need to check a couple of things.
Is there spark?
Is there fuel pressure?
If there is no spark than you could have a problem with a crank sensor, ignition module, pcm, or the wiring to any of those.
If
there is no fuel pressure than you could have a problem with a fuel
pump relay, oil pressure switch, pcm, or again the wiring to/from any of
those.
If you can describe your symptom a little better it may help identify the problem.
Figuring out if your missing either of the above will be a good start.
I’m happy to assist further over the phone at
https://www.6ya.com/expert/jeremy_d728a59f986299fa
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