So I was driving back to my college today -- a four hour drive. While driving, I look down at my gas gauge and I see that it's shooting up to full, when I had a half a tank of gas. And not just full, but past full. It slowly, over ten minutes, went back to where it was, but then went back up again over three to five minutes, past full. It stayed there, and wouldn't come back down. I did some research, and found that Escorts apparently have this issue, with the fuel sending unit? The thing is, I really would like to fix this. I cannot mentally drive, keep track of my mileage and just magically hope that if I calculate how many miles my car should be able to drive per its MPG I'll be fine. I just can't do that and not be freaking out every trip to work, lol. Basically, I suppose my question is this. In a college parking lot, is there any way I can determine what the problem is -- whether it's the cluster, the fuel sending unit, etc? Might this be something I can fix in a college parking lot, if I were to order the part? And lastly, if I were to decide to take my car to a shop, how much might it be to fix this -- if you had to ballpark it? Thanks!