Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

What should spark advance be at idle?

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May 13, 2007 | 02:00 AM

#1

mrmint69

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Joined: Oct 2006

Posts: 2,728

From: Post Falls, Idaho

What should spark advance be at idle?

Spark advance is 21 at idle when it warms up. Is this normal?

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Old

May 13, 2007 | 07:44 AM

#2

shoebox

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Joined: Dec 1969

Posts: 27,727

From: Little Rock, AR

It could be. It depends on what your idle speed is and what MAP readings are. Whatever the tables in the PCM say, is what it should be.

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