Trying to understand 7747 idle logic

[mmigacz]

I have two questions:

1. What controls the decay of the IAC steps from a cold engine to 55C?
2. Is there any way to speed up the IAC when it trys to get to the run position after 55C?

I posted my bin and a warm up log:

• When I start the engine the IAC parks at 150 steps (as expected)
• It then decays to 45 steps (as expected)
• It then opens up to get the target idle speed of 1000 RPM. Approximately 59 steps. (as expected)
• After I let the clutch out, the idle drops and the IAC opens up to 70 steps (@20 degrees C)
• If I let it idle (0 MPH), the IAC decays at a constant rate until the temp reaches 55C. The RPM is approximately 1125 during this duration.
• After 55C The IAC targets 1000 RPM (as expected)

What I don't like, is after I reach temperatures higher than 55C, I want the IAC to adjust quicker to the run RPM. When I pull up the first stop sign (after 55C) it takes 10 seconds for the RPM to drop to the desired RPM.

Some things to note:

• Its a manual transmission. Its never in Park/nuetral mode.
• I do not the throttle follower function

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Attachment 10771