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why is my idle airflow so inconsistent????

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Old 12-09-2005, 03:29 PM
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Default why is my idle airflow so inconsistent????

well in the morning i start the car up and the trims are +1.00 on start up, started it this afternoon, same ECT on start up, -.50 on start? WTF? i dont get it. any ideas?
Old 12-09-2005, 06:53 PM
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just a guess, but air temp was different so you started up using a different point on the Open Loop Eq table. Maybe the A/F was a little off at that temp. 2% swing is within normal.

I ahd something similar recently logging my IACs at idle. there was a cell that was dead on, .02 error Dynamic air - Idle air). When I tested the next tune, that cell was off by .28 and I had not touched it or any thing else that would have impacted it.
Old 12-09-2005, 09:09 PM
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open loop eq is vs coolant temp, so that shouldnt be it. also, i can get it to do the same weird **** with same ambient temps.




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