12three45 Posted July 3, 2007 Share Posted July 3, 2007 Well, I just bought a scanning tool and read the engine code and it was P0171 (fuel is lean). I also did a O2 sensor test and it said O2 Bank 1 Sensor 2 sensor has errors. Where is sensor 2? Is it the one next to the firewall? Hopefully it is just the O2 sensor and not something else. What does everyone recommend brand for the O2 sensor? Also would this be a upstream or downstream sensor? In addition, I have noticed that when I stomp on the gas when the car is moving that I hear a flutter like noise from the engine compartment. If anyone has driven beside a big desiel truck it sounds like that with the valves fluttering. Though when the car is parked and I stomp on the gas, the noice is not there. Anyone know what this noise is? Thanks Andy Edit: I took the MAF sensor out and cleaned it and the codes went away. in addition, the fluttering also went away. car runs great. Quote Link to comment Share on other sites More sharing options...
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