Can anyone answer this technical question which I think is contributing to the poor starting of my car:

What should the gap be between the Camshaft position sensor and the magnet on the back of the camshaft cog which gives it the signal?

Also, any idea what the resistances should be normal and then when the sensor is triggered?

I replaced the camshaft and crank sensor and still have poor starting. As always any help is appreciated greatly!

 

I'd guess about 1mm for the air-gap, lower the better. Sensor resistance is quoted as 2000 +/- 200 ohms. It wont vary. On a scope you should see >400mV pulses when cranking.

 

Legend!
Thank you!

 

1mm is too much, btw there is no magnet on the pulley, just a steel trigger block, the sensor has the magnet built in to it, you need a gap of approx 0.3/0.5mm. You need at least 800mv peak to peak when cranking measured with a scope. the voltage is generated by the trigger block sweeping across the face of the sensor, it rises goes positive as the block starts traverse and falls to an opposite negative as it moves across and leaves traverse, this is known as falling edge.

bob