Thats what I thought, but how does air "suction" from the smog pump if it is blowing? In particularly on my set up/diagrams. Right now I have the black and white check air valve turned around so that the air flows from the smog pump, through the diverter, and up through the check air valve. I had it the other way, but CEL came on within minutes. Now that I have it turned around the light has been off all day, but it still doesn't make sense to me because I know that it is on incorrect.

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1990 190E 3.0L