I drove down to town yesterday and the car stalled out at an intersection. It started right back up and I drove it home and have been driving my truck since then. I'm assuming that my fuel pump is the problem, hoping that I only have to replace one of them.

I did hear an occasional clicking sound (like a stone was stuck in the wheel) coming from the area where the pumps are located.

When I access the pumps, is there a good way of testing which pump to replace? Since the problem appears to be intermittent, I'm not sure that it will be all that obvious. Or should I bite the bullett and replace both pumps? I prefer not to take the trial and error approach, but would like to save on the $200+ that each pump costs.

Thanks,
Brian