2003 F150 5.4L Cranks, No start, no fuel pump whine at ignition on.
2003 F150 5.4L Gas EFI - Cranks, No start, no fuel pump whine at ignition on.
I had a few occurences over the past few weeks, eventually able to start after several
tries, now no luck starting, but cranks over fine.
Battery is good, Fuse #10 20 Amp to the fuel pump is OK.
I tried hitting the fuel tank with a mallet a few times in case the fuel pump has a
commutation problem, no luck.
AAA towed it to their shop, says it is a "fuel pump module", will cost $614 for the part
and $300 to install. (seems pretty expensive)
I see model years 2004 and newer have a "FPDM" fuel pump driver module, like the
Autozone & others part - the Dorman 590-001 FPDM,
which is $60-$110 on Amazon or ~ $100 at Autozone.
I can't seems to find confirmation that there is a FPDM on the 2003 model year, now I
think the service adviser may have meant Fuel Pump / Sender assembly.
Any comments are appreciated, thank you.
Classic fuel pump failure description, try this: get a rubber hammer and pound on the bottom of the fuel tank as someone cranks the engine over, if it starts then you need a new fuel pump assembly, if it don't then you need to get to the fuel pump harness under the rig and test for fuel pump power when the key is turned on, this will on stay on for a few seconds then it will shut off so make sure you watch closely or you will miss it, the other problems these have is a fuel pump connector failure.
Sounds like your fuel pump might be bad. But Have you checked your fuel pump inertia switch. If it's tripped the fuel pump will not come on.
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