Yesterday my fuel pump went bad. I was able to get a 255 intank pump that same day, so I went to work. Finished the car, it runs good no drivability problems at all. My only problem is before when I would start the car my FP gauge would read at 40 psi and hold that pressure for a few hours. Now when I turn my car on it reads at 45 psi, then when I turn the car off it will drop very fast to about 30 psi???