[don gilbert]

Mike, you are right, they do get lazy, espes. if you mix is a Little on the rich side. They slowly get covered in soot and get slower and slower over time. Easily seen on a meter. You can clean these sometimes and get ok results, but a new on wire Bosch is 19 bucks at O'reillys. Your test pretty much backs up a bad 02 as everything else looks good. I would put a new one in, get car at operating temp, and buy that i mean as hot as you normally get it, put on your meter and watch your dwell, and I bet it is just a little to rich for the 02, if it is, just turn your screw counter clock wise just a tad, and by tad I mean 1/8 inch, and then back clockwise about a 1/16, and then let it settle for a few seconds (these prehistoric lambda systems are very slow to react to changes sometime) The closer you get to stoiche, the faster you will see the needle moving on the dwell. EDIT: JW is rite, the relay has a high fail rate because it get very warm (normal) I take them apart and give a good cleaning to see if that the prob, and then get a new one. Get the correct realy, as the uni five pins from the partts stores will last about a week.