96 F150 cranks, but wont start. Lack of fuel has been con...

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 July 23, 2017

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

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

My truck is losing power on take off and throwing multiple codes

Hello. The codes listed are indicative of lean conditions on both banks A and B, as well as issues with the camshaft position sensor for circuit B. A lean condition at both banks can be caused by many things. A...

Wrench light and engine light on

Generally, the check engine light comes on when something fairly serious is going on with the vehicle. This can happen for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter,...

Car won't start; key popped when key turned

The battery and/or the starter may be bad. The first thing that needs done is check the battery to see if it is good and will hold a charge. The starter needs over 12 volts with over 175 amps of...

Related articles

A Buyer’s Guide to the 2012 Ford Escape Hybrid
Over Over the past few years, we’ve seen a major trend toward people choosing crossover utility vehicles (CUVs) over larger SUVs. The big motivator here, of course, is buying a more eco-friendly vehicle that will also save you a bundle...
A Buyer’s Guide to the 2012 Ford Flex
The The 2012 Ford Flex takes on a completely different look when it comes to a CUV. The Flex can tow up to 4,500 pounds and seat seven passengers comfortably. It also has lots of standard features that its competitors...
The Best Used Cars to Buy If You're a Dog Breeder or Trainer
These These days, dogs are more and more likely to travel with people than ever before. After all, what dog doesn’t ride in a car? As a breeder and trainer though, you’re probably more likely to carry along dogs than...