I have no hot going to my crank sensor. DOes anyone know what color wire is hot?

could i rewire it?

My car is a 91 TII

Thanks guys

 

My lead coil pack is only getting 3 volts on the pulse wire and i check the crank position sensor wires and they have no power.

Is it the blue, green, red, or white thats supposed to be hot?

 

There is no voltage going to the CAS.

The CAS makes voltage when it turns and sends it to the ECU.

 

I could be wrong, but from reading the FSM at
http://www.teamfc3s.org/main/factory...cal_System.pdf the Crank Angle sensor is appearsa to actually be a hall effect sensor and only generates pulses. It does not receive a voltage input, but only gives an output based on a magnet passing a certain point. (I will check my car when I get home to be sure.)

The 3 volts to the leading coil may actually be fine since the ecu sends a pulse to the coil, telling it to fire. If the duty cycle was 25% on a 12V pulse, your voltmeter will see 3V.

(Turn your meter to AC and see if you get a larger amplitude (or any at all.) (Your meter may also be able to measure duty cycle and frequency.)

You should be able to test the ignition with a spark plug in one of the wires, and the threads grounded to something while turning the engine over.