Thanks CobraJet. I found that website too, but none of my wires are labeled A,B,C or D. I went thru process of elimination to figure out which was which and I believe I probed the right ones. I did find the pintle was sticking when I tried to measure resistance at the yellow/red wire, so I freed it up and cleaned it with Deep Creep. The exhaust tube is blowing and the intake is sucking, so I don't think anything is clogged. I still have the CEL. I am going to have it scanned when Advance Auto opens this morning to see where I stand.