Weird issue 180SX CA18DET

[Trav1s]

Hi,

Got a bit of a weird issue, CA18DET, standalone ECU, no MAF (MAP sensor), yellowjacket coils. Do not get any spark on crank, but yet if we remove the CAS and spin it manually, it'll spark everytime. But as soon as we put the CAS back into the motor, no spark. Both moons are good (exhaust cam and CAS), have tried 3 different CAS sensors.

Any suggestions will be much appreciated.

Thanks,

[da_crew10]

Check your wiring harness with a multimeter? If you tried that many Cam angle sensors I'd start with the connector section.