I don't think you gets lots of warning when a fuel pump is going out. I just had mine die a few weeks ago. My car was running fine but I had about 95K on the fuel pump and I let the gas get pretty low in the tank because I wasn't paying attention. I pulled into a gas station and everything was still running fine. I cut my engine off to wait for the customer ahead of me to finish getting gas. When I tried to start it back up it would barely run. I put gas in it and was able to get it started and got a few hundred yards before it died again. After that I called a tow truck. Once I put a new fuel pump in all was well. I think letting my fuel get too low in the tank was the nail in the coffin for my fuel pump but like I said it was running just fine before it died.