I bought a 1998 ranger 2.5 the previous owner had the ecu crank and cam sensors replaced. I drove it ran really good shut it off at the store went to leave and wouldn’t start. Got it towed home replaced the coils( 8 spark plugs) nothing. I figured I would replace the fuel pump since I already had one. It would start and shut right back off. It did this like 10 times and now it won’t start at all again. I am lost any help at all would be greatly appreciated. I also replaced all the relays for the ignition and fuel system as well as the ignition control module.