Idle woes, even after RTFM - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-10-2010, 01:51 AM   #61
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so i cleaned up the enrichment map so its at 0 from 45 and up, i lowered the 75 kPa to 50 kPa, didnt do much, then i lowered the master fuel trim from 2% to 0 and for the first time i'm idling in the 14-15s. Still having problems with electric load though such as fans going on/turning lights on/windows up or down. The ECU removes fuel instead of adding it and of course falls flat on its face and dies.
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Old 09-10-2010, 12:15 PM   #62
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When the fans turn on, I believe the car goes into a different load cell. Or at least closer to one of the load cells. Maybe you need to add fuel into the higher load cells around idle?

I could be wrong, but it seems like my vac gauge moves up as load turns on
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Old 09-10-2010, 05:29 PM   #63
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my car idles at the 20-40kpa range, The 60kpa cell has its fuel bumped to idle it at 12a/f when no voltage drop is present. I'll bump it up some more and keep my eye on it.
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Old 09-11-2010, 09:17 AM   #64
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It is possible that your 40kpa is too lean and your 20kpa is too rich to compensate. So when you idle around 30kpa (assumed) it idles right. But on mornings when it idles at low load it runs rich and when it has high electrical load it idles lean.

See if you can get the load with different combinations of accessories on to be exactly 40kpa and tune that cell. Then tune 20kpa cell to get a good normal idle
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Old 09-12-2010, 02:26 AM   #65
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the fuel seems to be affected only from electric load. Turning the wheel does nothing as far as the a/fs go. (power steering)
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Old 09-12-2010, 05:18 AM   #66
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well now for sure my idle is tuned rich and idles at 10.5 solid. No luck. Same thing. I reised both windows, a/fs go up the roof and it dies.
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Old 09-14-2010, 11:01 PM   #67
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Decided to turn off the predict map. Idle seems stable and not bouncing around. It also got rid of my nasty lean tip in issue. Still having the same issues with electric load though.

Well my map is rich out the **** in the lows, now that its stable enough i can remove some fuel.

Last edited by triple88a; 09-14-2010 at 11:12 PM.
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