Ignition Timing: Notes

WARNING: This page is about a different car, the 1993 Audi 90 and 1993 Audi 100. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Ignition timing, idle speed and idle mixture are controlled by the MFI ECM. Crankshaft reference sensor, engine speed reference sensor, Hall Effect sensor and various other sensors signal MFI ECM, causing ignition at appropriate moment. See Fig 1 -Fig 4 .

Fig 1: Locating Crankshaft Reference Sender

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Fig 2: Locating Engine Speed Sensor

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Fig 3: Locating Hall Effect Sensor

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Fig 4: Controlling Ignition Timing

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