2001 Ford Expedition no fuel

Tiny
BIGD86
  • MEMBER
  • 2001 FORD EXPEDITION
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 103,000 MILES
My 2001 ford expedition turns over but will not start. I replaced the fuel pump and still no fuel to the motor. I checked the fuel shut off switch and it is good as far as I can tell.
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Monday, March 30th, 2015 AT 9:39 PM

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Tiny
CARADIODOC
  • EXPERT
What originally led you to the fuel pump? Have you checked for 12 volts at the connector? If so, are you expecting it to be there with just turning on the ignition switch?
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Tuesday, March 31st, 2015 AT 12:19 AM
Tiny
BIGD86
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Well with my experience it turned out to be the fuel pump 8 times out of 10. And no I did not check the connector. Now your talking about the connector outside close to the back drives side tire right or the connector on top of the tank? Amd how would I test that?
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Tuesday, March 31st, 2015 AT 6:15 AM
Tiny
CARADIODOC
  • EXPERT
The connector I'm referring to is the one you had to disconnect when you replaced the pump. If you need me to, I'll dig up a wiring diagram to tell you which wire to test. The thing is there will not be 12 volts there with just the ignition switch turned on. That would create a fire hazard if a fuel line got ruptured in a crash. You need to check for that 12 volts while the engine is being cranked. You need to check for spark too when you have a crank but no-start condition. Too many people get hung up on the first thing they find missing. By far the most common cause of a no-start is a sensor failure that results in no fuel AND no spark. That can be misleading too because on most vehicles with that problem, the fuel pump still will run for one second after turning on the ignition switch. That can leave residual pressure in the line which makes people think they have fuel pressure. The injectors won't fire either so that fuel pressure won't be bleeding down and you won't smell fuel at the tail pipe.

If you DO have spark, that rules out the sensors and ignition system, and in that case you're right that the fuel pump is the best suspect. What we need to do first though is measure that supply voltage before going through all the work of replacing the pump.
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Tuesday, March 31st, 2015 AT 8:33 PM

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