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Tried pulling codes but nothing comes up. Unplugged EGR to see if check engine light works. It does and I did pull a code for the EGR. Unhooked battery cable for 1 hour and started car with spout in and knock sensor unplugged. Timing read appx. 8 degrees advance. Revving engine caused...

I'm new here and new to 2.3s also. I've got a really puzzling problem. Car is an 89 Mustnag 2.3 n/a automatic. Timing retards 20 degrees from base timing when I plug in the spout connector. Thought maybe it was the knock sensor. Replaced with a known good one from another mustang identical to...