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My idle speed has drifted down into the 500 rpm range. I'm looking for the right procedure to put the IAC in the fixed duty cycle so that I can reset the idle speed. I've seen references for older DF90a's (~2009) that say you raise the rpm over 1000 using the air by-pass screw on the throttle body, then you have 5 minutes to set the idle speed using the same by-pass screw. Is the same procedure used for a 2019?