I am thinking that my gas mileage is bad. I'm not sure though, so I just want to check the O2 sensor since that can have a big effect on the whoe fuel situation. I'm going to give it a check tomorrow with a diagnostic program. I am just wondering what readings I should be getting from it? I think it is read in mV. I'm not sure though.
I am also going to try to change the fuel filter as well while I'm at it. I think that is the only thing I have left that could be bad. Already changed Fuel Pump Relay, rebuilt F.P.R. and coolant temp sensor that is on the intake manifold.

Tyler

 

Should be bouncing around .450 volts = 450mV. That's an average so expect the reading (if using a scanner or multimeter) to be going from 200 to 700 with an average of 450. The idea is that the computer is adjusting with a lag time, it's normal. If you notice a really low and really high values like 30 and 900 during normal driving conditions, either your o2 sensor is bad, a spark plug isn't working on the drivers side of the engine, or you've got an exhaust leak (like me ).

 

Well, the Sensor is fine. I do think I solved the gas mileage thing though. Haha, turns out I have never really watched my odometer as I am driving. Turns out I am driving almost 100 miles a weekend, just around town.

Thanks for the help though JPrevost