Yea - I occasionally have the same problem in the cold. The fuel gauge will start swinging all over until the car warms up...In the summer it's fine....To solve this problem, I push the trip meter when I get gas. I know in 250 miles I have to get more. It's a '92 and if you really want to put that much time and/or money/effort into a 13 year old Saturn - bless ya! (then again, you didn't say how many miles are on it - I guess I'm just saying that because mine's my beater 60 mile round trip a day work car...)