Quote:
Originally Posted by Mony
2- When I unplug the reference sensor there is no difference at all. The car idle and roughness does not change at all.
Do I have a bad reference sensor? The reference sensor is used for starting the car. But is it used when the car is running?
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Yes, once the engine is running, the reference sensor is no longer needed to develop the timing.
What you just did is a good test for the speed sensor, i.e. if revving the engine without the reference
sensor results in normal running and doesn't cause the engine to die, the speed sensor is most likely OK.