Q: 96 F150 cranks, but wont start. Lack of fuel has been confirmed, but i still need to diagnose the correct part. How do i do that?

asked by on

If I put a little gas in manually, it will run for a few seconds till it burns the gas off that i put in manually, but still won't draw gas on its own. Tried turning the key on & off a few times to prime the fuel line. (The tank had previously been run out of gas) Fuel pump runs for about 2-3 seconds to prime the line, like it should. I replaced the pump only 2 months ago. Checked the fuse,& Replaced the filter today. Problem persists. Need to know how to properly diagnose the troubled part. I also pulled the following EEC-IV codes:

212 - loss of diagnostic monitor signal. 542 - Fuel circuit failure 556 - Fuel pump relay primary circuit failure Please help. Thank You, Tim

My car has 265000 miles.
My car has an automatic transmission.

If you have confirmed that no power is reaching the pump once the car is running, such a fault can only be diagnosed by tracing the supply circuit (might have to be done, too, while "independently" powering the pump to keep the car running while you trace the circuit for the fault). You will need the factory wiring diagram because the control circuit might not be "straightforward". I can guarantee though if you use the wiring diagram and trace the circuit from power source (the battery) to the pump, through all wiring, fuses, relays, and any control boards, you will find the interruption. If the "new" pump was run dry, that could create an issue, too, by the way. To get the power supply problem resolved, the recommended service is an electrical circuit/component diagnostic. If you request that service, the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 96 F150 cranks, but wont start. Lack of fuel has been confirmed, but i still need to diagnose the correct part. How do i do that?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Missing IAC valve vacuum line.

The IAC (Idle Air Control) valve is required to have a vacuum line on it to work the engine properly. The line from the carbon box filter is supposed to be hooked to it, but it may be damaged. Take...

Q: When starting, car has heavy gas smell and starts to smoke from under hood with engine light on.

In order to start diagnosis the computer will need to be scanned for codes. The problem sounds like you have a fuel injector leaking or a cylinder misfire. Check engine oil to see if it is overfull indicating fuel has...

Q: Suzuki sidekick sport 1.8l won"t idle while its cold and has very bad hestitation

Hi there. It sounds like there could a combination of some things happening here; we're always hopeful that it's not an engine mechanical fault. It does sound like the idle air control may be sticking at the warm idle level,...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.