Skip the auto shop - Our mechanics make house calls

Q: No current to fuel pump

asked by on

My camper was started up two weeks ago. But this week it cranked and wouldn't start. There is no current to the fuel pump. It has a new fuel pump, relay, oil pressure sensor, and spark plug.

First, I would check the inertia switch. This switch opens on perceived impact and prevents power from getting to the fuel pump. There should be continuity across the switch at all times. If the switch is good, I would check the fuel pump fusible link. This link may blow if the fuel pump is worn and drawing excessive current, of if there is a short somewhere in the circuit. If both these items check out, the engine control module (ECM) is not applying power to the fuel pump relay. This could be because of a faulty sensor, wiring, or an internal ECM problem. I suggest having a trained professional, such as one from YourMechanic, diagnose your Ford firsthand.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: The car has trouble starting - 2001 BMW 325i

If the mass air flow sensor and fuel pump have been verified as the cause or causes for the hard starting, then they should be replaced. When the vehicle is turned off, fuel pressure should be maintained in the fuel...

Q: Brake and taillights not working

The problem is most likely the brake light switch, it mounts to the brake pedal, and when pushed, illuminates the brake lights. The problem could also be a fuse or relay. If you need assistance, use YourMechanic to have a...

Q: Car starts, idles low, and dies

Your fuel pump may be failing and the engine intake may have incurred some vacuum leaks. The system would need a thorough diagnostic check. I recommend having a certified mechanic, such as one from YourMechanic, come and test your vehicle's...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...