2.9 bronco II idle problems
My daughters Bronco II will not idle properly, When first started hot or cold it will rev to 2000 rpm then slowly drop until it dies. Restart and it will rev to 1500 rpm then slowly drop to about 1200. It will then hunt back and forth about 300 rpm. The computer is throwing no codes and I recently rebuilt the heads replaced the plugs wires and cap also. I was getting codes and have replaced the egr valve and position sensor. Any ideas out there?