Thread: M104...what tells the ignition module to fire?
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Old 01-28-2010, 10:18 AM
MAG58 MAG58 is offline
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Join Date: Aug 2009
Location: Indianapolis, IN
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IIRC it only has one sensor, and that's the TDC sensor. Basically it just tells the computer when it's at #1 TDC and firing.
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1993 190E 2.6 Sportline
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