Engine stalls and will not restart?

Tiny
KINGXLURCH
  • MEMBER
  • 2002 FORD F-150
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
This morning I started my truck to warm up it shut off and won’t start back. I have half a tank of fuel will start with either but won’t run. Removed fuel filter and no pressure. What can I do?
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Wednesday, July 3rd, 2019 AT 8:49 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
A few different things may have happened. First, the fuel pump fuse may have blown, second the fuel pump relay may have failed, and third, the pump may have failed.

First, I need you to check the fuse. Under the hood, near the battery is a fuse / relay box. See pic 1. In that box is the fuel pump fuse. I highlighted it in pic 2. Check that and confirm it is good. Check out the diagrams (Below).

Here are a few links that you may find helpful when checking the fuse and using basic test equipment:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuse is good, then in the same box locate the fuel pump relay. See pic 3 If there is another relay in the same box that has the same part number on it, switch them and see if the truck will start. If there isn't, here is a link that explains how to check a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If there is power to the fuse and the relay works, then suspect the fuel pump failed. To confirm, you will need to check if there is power at the pump. To replace the pump requires the fuel tank to be removed. It's not an easy job, but I will provide the directions. All remaining pictures correlate with these directions. First, here is a link that easily understood and explains in general how to replace a fuel pump:

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Here are the directions specific to your vehicle:

FUEL TANK
Fuel Line Removal Tool

WARNING:
DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL RELATED COMPONENT HIGHLY FLAMMABLE MIXTURES ARE ALWAYS PRESENT AND MAY BE IGNITED, RESULTING IN POSSIBLE INJURY.
FUEL IN THE FUEL SYSTEM REMAINS UNDER HIGH PRESSURE EVEN WHEN THE ENGINE IS NOT RUNNING.

1. Relieve the fuel pressure.
2. Disconnect the battery ground cable.
3. Raise and support the vehicle; refer to Maintenance/Service and Repair.

4. If equipped, remove the fuel tank skid plate.
1 Remove the bolts.
2 Lower the fuel tank skid plate.
5. Drain the fuel from the fuel tank.
6. Remove one hose clamp on the fuel tank filler pipe support.
7. Disconnect the fuel tank to filler pipe hose from the fuel tank.
8. Disconnect the fuel tank filler pipe vent hose from the fuel tank.
9. Position a Hi-Lift Jack under the fuel tank.
10. Remove the fuel tank support straps.
1 Remove the bolts.
2 Remove the fuel tank support straps.
Partially lower the fuel tank.
11. Using the special tool, disconnect the fuel lines from the fuel sender.
12. Disconnect the fuel tank front connections.
Disconnect the Evaporative Emission (EVAP) hose (A).
Disconnect the fuel tank pressure transducer electrical connector (B).
13. Release the rear EVAP hose clamp and disconnect the hose.
14. Disconnect the fuel pump electrical connector.

15. Lower and remove the fuel tank.

INSTALLATION

1. To install, reverse the removal procedure.

Check out the diagrams (Below). Please let us know what happens.
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Monday, May 31st, 2021 AT 12:40 PM

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