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Posted: Mon Dec 14, 2015 4:06 pm
by Mike W.
It's an air bypass, so closed, or screwed all the way in is rich and opening it up leans it out. Kind of like carb idle screws, I'd start at 3 turns out and go from there. See where it idles best, then start turning it in some until it starts running a little ragged. Back off it a little bit. Or take it in and use a CO analyzer, but I don't have one of them.
Posted: Mon Dec 21, 2015 1:43 pm
by Vintagemotorwerks
I wouldn't turn that screw if I were you. The issues lies within the AFM electronics. The screw is only for idle adjustments. The contacts are not sending information to the ecu so it doesn't know how much fuel to send. I was able to source an AFM off of eBay for $30 from a salvage yard in San Bernandino, CA
Posted: Mon Dec 21, 2015 11:40 pm
by Lenny D.
Posted: Tue Dec 22, 2015 12:15 am
by GripGreg
I would love to know the name of that salvage yard in San Bernadino?
Thanx in advance,,,,Greg