If the car is running the sensor is being recognized. Timing is not an issue of sensor performance. It is possible for intermittant misfires or worse to occur as a result of poor sensor signals or signal strength; not timing issues though.

You should have vacuum at the line to the ignition control unit. The ign controller also is dependant on engine temp. The reading comes from the two wire temp sensor. One wire is used for ignition and the other for KE.

There is a removalble plug to the ignition unit that is a coding plug for timing control. I have no info for how it varies timing.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician