My car was getting bad gas mileage for a while, then I finally found time to work on it a little at work. I found that the MAF sensor was not reading correctly. It was over-estimating the amount of air coming into the motor, so the computer was dumping more fuel in than the motor needed. Ever since I put the new MAF on it, my mileage around town is around 22-23, up from about 19-20. Highway mileage is much higher. I used to get the same mileage no matter if I was around town, or on the highway. I was probably getting about 28-30 a few weeks ago when I drove about 120 miles in one day on a weekend, all highway.
I am much happier with this car now that my gas mileage and trans shifting problem is gone. The bad MAF sensor was also causing very harsh shifting, but now it shifts great.
