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Old 04-26-2006, 12:06 AM
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wbain5280 wbain5280 is offline
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Join Date: May 2001
Location: Northern Va.
Posts: 3,386
It tells the engine computer where crank is in it's rotation. There is usually a gap, or an additional position, for cyl 1 TDC.

On older cars, such as my W126, it tells the EZK when to fire.
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Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.
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