Hello,
First check to see if you have power to the injector harness. If you are getting 12V to the harness then it could be a sensor issue.
The crank position sensor sends signal to the ECM and the ECM uses that data to send injector pulses to start and run the engine.
It could be because of a faulty crank position sensor that you are having crank and no start. Overtime heat and vibration will make the crank sensor loose its calibration and give faulty signal. It could also have bad wiring.
Check to see if you have getting 5V to the crank sensor harness.
You might find these articles helpful:
https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor
https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement
I have attached diagrams for your reference.
Please let me know of any questions.
Thank you.
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Wednesday, August 18th, 2021 AT 8:10 AM