Well, that's it. I finally got the = right temperature sensor, and put it in today, hoping it would cure my running = to rich after warm up problem, and...nothing. Ran like a charm the first 15 = minutes, but as soon as the temp gauge hit 12:00 o'clock,it last power, started = blowing black smoke. Plugs are new, catalytic converter is new, nothing seems to help. = Everyone said it would be that sensor. It goes to the mechanic tomorrow = night. I'll let the list know what it turns out to be.