Okay so after I fill the tank in my protege 5, and I first start my car to drive away from the pump, my tach, starts bouncing up and down like my car is about to stall and jumps back to a normal idel and back down like it's going to stall again.. It does this back and fourth until I start driving it and then it smooths out and the problem goes away.. Has anyone else ever had this issue? And any recommendations on what I can do to fix this? I was thinking it might be a fuel filter issue. How hard is it to replace the fuel filter since it is part of the fuel pump? Thanks for everyone's help. Chris.