What would make a 1993 Ford Tempo engine suddenly die if it's got a new fuel pump and filter and battery?

Answer 1

Yesterday I fix the same problem with my 89 tempo. The fuel pump would turn on and off all the time while driving around. I put in a new pump, filter and fuel pump relay. The problem continued. It ended up being the plugin on the fuel pump, the plastic was cracked and that made for a loose conection. You can hear the fuel pump turn on for a second or two when you turn the key to acc. If you don't hear that then it has to be one of these 4 problems. Make that 5 problems. Forgot to mention the fuel cut-off switch. == == For nearly 2 years, I have had the same problem with my 93' Tempo; where my engine completely looses power in and out of the highway, even local driving was beginning to become more and more difficult. After replacing the fuel pump, wiring, hoses and filters, I have found the problem to be of an electrical origin. After investigation, I have come to find out that it was my RELAY BOX (The black box that is connected to the drivers side strut mount beneath the hood); inside the box are a series of relays meant for different components for the car, such as the Fuel Pump, Air conditioning and so on. Thankfully, my father works for a Government Contractor revolving around electronic engineering, thus I was able to pinpoint the problem faster and more efficiently with his help. The FUEL PUMP Relay inside the black box was actually completely worn out (not engaging correctly). I have went online to find where to get a spare relay to replace it and, HOLEE CRAP, it was an obsolete model that was not being manufactured or sold anymore. My father came up with a crazy idea of rigging the relay circuitry to accept a heavier duty Pontiac Fuel Pump Relay; this relay was ALOT more common and widely purchased in the United States, so it only costs 5 bucks. He was able to soder heavy guage wires onto the relay board made them extend out of the box to connect to the heavier PONTIAC Relay mounted into place against the strut near the Black Box. Ever since, my car has been running well without it loosing power. Hope this is helpful to any and all owners of Ford Tempos.