Car's engine unexpectedly dies without warning under varied circumstances.

Thanks for the advice! The mechanic we normally used told us he "checked" the fuel pump by testing the fuel line pressure with some type of tool or gauge; is that the same thing you are recommending be done or are you recommending something different than what he seems to have done? Don't give up on us, we've been having this problem for almost a month without any success in finding a solution for the problem, so any advice you can give us would be great!

i think the start is to monitor the pressure when it fails. if the pressure is ok, i would look at ignition like the module or pick up. Roy