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Old 10-20-2024, 05:27 PM   #8
weq92f
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Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,329
Re: Vacuum leak detector...works well

.

Yesterday I spent a few hours fine tuning idle with blade adjustment, richening up the idle AFR in an effort to bring the IAC "counts" down to below 10 in gear. This is the amount of work the IAC is doing to keep target idle rpm. The goal was to give it almost no authority to reduce idle rpm while keeping it in range of having immediate authority to increase idle rpm.

When done, I had the warm/hot start sequence functioning perfectly....it starts, idles up and then settles into a nice idle near the target of 700 with 0 IAC count. I pull it into gear and the idle drops slightly with IAC counts around 10. Pull it out of gear, the idle goes up a couple hundred rpm and then settles a bit back near target.

Went to cold start today and it was perfect. Let it warm to FOT where it warm/hot starts just as it did yesterday.

Success!

-Kevin
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