I have a Ford Tautus 2001 No start?

I have a Ford taurus station wagon 2001 and I had fuel problems 6 weeks ago and I repalace the fuel pump and run again but I notice that had small problem to start, anyhow I drove the car was running good but 5 weeks ago I parked and won't start, Replace the fuel pum again no luck, relay, MAF sensor, no luck, any idea. Thanks!