2005 4.0 v6 Cranks but won’t start

[Vinnib18]

Parked my truck the other day and when tried starting it a couple hours later it would crank but no start.
Checked relays, fuses, replaced fuel pump but no luck. I’m getting power at the new pump but I can’t hear it run.
Any ideas ?

 

[franklin2]

Take a rubber mallet or block of wood and lightly beat on the bottom of the fuel tank. Then try it again. If that works, new pump.

 

[william wixon]

I’m having the same problem. I have spark replaced the relay replaced the fuel pump. Check the fuses. I have electricity at the fuel pump connector. Another forum informed me that when you turn the key it goes to 12 V and the pump starts and then after two seconds it drops down seven or 8 V. It does that. I disconnected the fuel filter and turn the key and no gas spewed out.
Oh, and another forum suggested trying spraying starter fluid down the air intake and if the engine turns over, it’s not electrical issue it a fuel issue. I absolutely cannot understand why the fuel pump doesn’t turn on!

Parked my truck the other day and when tried starting it a couple hours later it would crank but no start.
Checked relays, fuses, replaced fuel pump but no luck. I’m getting power at the new pump but I can’t hear it run.
Any ideas ?

 

[Brain75]

Jumping to ether/starting fluid is a 50/50 shot at starting usually - telling you if it is fuel or spark (air works 99.9% of the time, and engines only need three things: fuel/air/fire).
If you get nothing out of the fuel line before the filter, either A) you are out of gas B) the pump is dead C) wiring issue (bad ground).... assuming a 2005 is plumbed up like the older ones I know more about. Is there anything else between the pump and where you disconnected it?

Edit: I didn't catch we are talking a revive of a thread by someone completely unrelated... Someone more familiar with the newer than me needs to verify, when the relay is closed it is supplying ground to the pump (pump always has power with key on) in the old ones like my 2nd gen - Did Ford continue that in this generation? so you probably have a bad ground (I assume you were testing for power without using the ground pin, but instead just a convenient spot on the frame...)

 

[franklin2]

Jumping to ether/starting fluid is a 50/50 shot at starting usually - telling you if it is fuel or spark (air works 99.9% of the time, and engines only need three things: fuel/air/fire).
If you get nothing out of the fuel line before the filter, either A) you are out of gas B) the pump is dead C) wiring issue (bad ground).... assuming a 2005 is plumbed up like the older ones I know more about. Is there anything else between the pump and where you disconnected it?

Edit: I didn't catch we are talking a revive of a thread by someone completely unrelated... Someone more familiar with the newer than me needs to verify, when the relay is closed it is supplying ground to the pump (pump always has power with key on) in the old ones like my 2nd gen - Did Ford continue that in this generation? so you probably have a bad ground (I assume you were testing for power without using the ground pin, but instead just a convenient spot on the frame...)

Never seen any Ford vehicle, any year, where they grounded the pump itself to make it run. They do ground the fuel pump relay to make it activate.

 

[franklin2]

I’m having the same problem. I have spark replaced the relay replaced the fuel pump. Check the fuses. I have electricity at the fuel pump connector. Another forum informed me that when you turn the key it goes to 12 V and the pump starts and then after two seconds it drops down seven or 8 V. It does that. I disconnected the fuel filter and turn the key and no gas spewed out.
Oh, and another forum suggested trying spraying starter fluid down the air intake and if the engine turns over, it’s not electrical issue it a fuel issue. I absolutely cannot understand why the fuel pump doesn’t turn on!

If you have power at the fuel tank, but the pump won't run, it's simply the pump. Don't care that it's brand new, new bad parts are common now. You can pull it again and hook it straight to the battery with some scrap wires, and see if it will run on the bench.

 

[OldBlue61]

Don't care that it's brand new, new bad parts are common now.

How true. My last pump lasted 13 months. Granted, I bought a cheapy, but since I just had to replace it again (thread HERE), I bought a NAPA pump.