Crank/ Cam sensor importance?

[Begle1]

Does a VP44 truck need a cam/ crank/ IP position sensor to start or run? Or can it drop to a mechanical base timing and operate without it?

 

[MAXTORQ]

Normally it will be intermittant.

What should happen in event of the CPS going out is for the ECM to rely on the timing sensor inside of the VP. But not always does this happen.

 

[SmokeN 12 ValvE]

mine would not start with the crank sensor unplugged

It was going bad and the tach would work when it felt like it and a lot of times it would stay in a higher gear (auto) when coming to a stop and lug it down almost to the point it would cut off.