No start...no power to fuel pump
#1
05-06-2019, 08:05 PM
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No start...no power to fuel pump
So my truck, 2008 F-150 FX4 died on me the other day. Here is what I’ve done so far.
- Traced out each wire from FPDM and checked for continuity, all good.
- replaced FPDM with a used ford part and a new Dorman part 590-001
- checked inertia switch, which was in the correct position.
- checked fuel rail sensor and checked wires for continuity. Good there too
-fuel pump will cycle and truck will run with power direct to fuel pump, bypassing the FPDM.
- tried plugging in another fuel pump while FPDM was in the loop just to see if it was a voltage issue from the installed pump. But nothing.
Any advice??
- Traced out each wire from FPDM and checked for continuity, all good.
- replaced FPDM with a used ford part and a new Dorman part 590-001
- checked inertia switch, which was in the correct position.
- checked fuel rail sensor and checked wires for continuity. Good there too
-fuel pump will cycle and truck will run with power direct to fuel pump, bypassing the FPDM.
- tried plugging in another fuel pump while FPDM was in the loop just to see if it was a voltage issue from the installed pump. But nothing.
Any advice??
Last edited by Smokeater99; 05-07-2019 at 10:50 AM.
#2
05-06-2019, 08:36 PM
#3
05-06-2019, 09:00 PM
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#5
05-07-2019, 11:55 AM
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#6
05-10-2019, 07:42 AM
Sounds like there's a loose or corroded wire in a CONNECTER somewhere. You stick the probe of your meter in there, it picks it up as good, but it's loose enough that plug it into the other end of the connector, it's more loose.
Or, a simple continuity test would show a good wire, even if only 1 of the required 12 volts were actually making it through the wire, and probably fool to CAN system too. (assuming 12 volts are actually what the pump needs)
Or, a simple continuity test would show a good wire, even if only 1 of the required 12 volts were actually making it through the wire, and probably fool to CAN system too. (assuming 12 volts are actually what the pump needs)