I’ve had intermittent times where my 1JZ will not start for weeks then work fine. A little background: AEM V2, sard 650cc injectors, single turbo, stock ignition and sensors.

I used to be able to mess with the tune a little and it would start, or feather the throttle (it’s never been perfect tbh). Always assumed it was temperature related and in the tune somewhere, but I’ve not had luck lately getting it going.

I’m thinking there’s an electrical issue or bad sensor, but don’t know where to start looking. I’m thinking crank sensor since when the car does start, it runs great.

Additionally, does anyone know what signals I should log to check for sensor issues? It appears there’s no signal from the cam sensors when I crank it, but I’m not familiar enough with all the signals to know if I’m looking at the right ones.