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Old 04-08-2011, 09:39 PM   #8 (permalink)
Red_Liner740
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Join Date: Mar 2011
Location: Toronto, Canada
Posts: 21

Max - '01 Nissan Maxima 20th Anniversary Ed.
90 day: 28.6 mpg (US)
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Mine kicks in at 1500...there is a definitive change in deceleration exactly at 1500...its at that point that injectors kick in to slow down the RPM drop as well as your Idle Speed Solenoid starts to open to allow idle air to start coming in.

its set at a higher RPM to "catch" the rapidly declining RPM that you would see in neutral if you blipped the throttle and let it fall back down. Without this feature, a lot of cars would stall because by the time idle speed comes the flywheel momentum would overcome the gas given and it blamo....stalled car.
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