Ctaylor no I had not until after I replaced the ox sensor, I drove it 50 miles today and at 51 miles it started to buck and lose power again. I let it sit at the doctors office for 2 hours, and had no trouble starting, but I only got 15 miles and again it loss power, and would not take the fuel as you press the peddle, I stopped and put gas in and it drove almost home when it began to act up again. It seems strange that you can let it sit for half an hour or more and it starts and runs just fine, any how I want to go out and check the EHA setting and the potentiometer setting, AS I remember the eha was -0 to +0 but the pot I cant remember.