1990 FC3C, N/A changed coolant today, flushed system, refilled, burped the baby, and my vert does have bleeder, its the wingnut, ( I was reading archives again ) and when taking my youngster to school, 2500-3500 in 2nd and 3rd, engine dragged. Also, got trouble code 17>Feedback system (poss O2 sensor) feedback cancelled. O2 sensor, brand new one, replaced less than 2 weeks ago. Any ideas? Recently put new AFM in, and TPS is changing today, but wondering if maybe new coolant frightened "Daphne" ? Any ideas greatly appreciated. RUF RUF RUF