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Smog passed. High on NOX and HC at 15mph. 700 1989

posted by  someone claiming to be j on  Mon Jun 30 06:09 CST 2003 [RELATED]

I've been unwise enough to mess with the idle screw without really knowing what I was doing.

You need to ground the pigtail on rt fender well to set the IAC correctly.

Since you have the idle adj knob you probably have the 007 AMM that has an adjustment screw and has probably benn screwed around with(literaly)

Set this screw per FAQ (analog dwell meter works great) right turn is rich and turns led on or dwell meter peged to right.

This is an input to the ECU and needs to be set correctly. Not by what is coming out of your exhaust. This works in combination with the oxygen sensor for the engine ECU to correctly set the fuel mixture.






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