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How does the IAC really work !! 700 1985

posted by  dan52 on  Thu Sep 23 17:40 CST 2004
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Thanks for the fedback Art. I agree with your complimentary comments regarding Noel's study and explanation. If we only had our hands on the ecu source code we could fully unlock the mysteries therin.

We are on the same page vis-a-vis the pulse frequency contrasted with the armature inertia keeping the amplitude down. Have you measured the duty cycle and pulse width of the two signals?

If grounding the test point, doesn't induce the ecu to hold the armature closed, is the alternate method of clampig the IAC hose shut to set base idle off base? (pun intended)

Thanks again to both you and Noel for sharing your knowledge and wisdom.

Dan

Regarding the corner lights, no surprise there. Hope you earned a brownie point or two.






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