Skip the auto shop - Our mechanics make house calls

Q: Runs fine for days then acts like running out of gas and then dies and try restart and runs then dies ,when I turn key on you hea

asked by on

I then turn key on and you hear pump in gas tank pump up ,but you donot hear external pump ,you let sit an hour and starts and runs fine and you hear external pump running while engine is running ,replaced both fuel pumps three years ago and fuel pump relay feels hot ? I am thinking external pump is bad.

My car has 300000 miles.
My car has an automatic transmission.

A: The fuel pump in the fuel tank is designed ...

The fuel pump in the fuel tank is designed to have low pressure and high volume to feed the front fuel pump the right amount fuel. The front fuel pump supplies the engine with high pressure to the engine.

When you do not hear the pump run then the fuel pump is bad and should be replaced along with the relay. You should not have to replace the in tank pump if it is running. I’d suggest replacing the fuel filter as well.

I’d suggest getting this inspected by a qualified technician, such as one from YourMechanic, to diagnose your stalling issue and make the necessary repairs.

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: A Volkswagen Golf Mk4 starts but doesn't rev at all

Many things can cause that. Either the fuel filter is clogged or the fuel pump isn't pumping fuel and it won't rev. Of those things, often the MAF sensors go bad and gets covered with dirt or goes out and...

Q: Slow acceleration and gasping noise -1985 Chevrolet C10

Hello. There are multiple possibilities here. There could be a vacuum leak to the engine (which affects timing, mixture, etc.) all of which kick in when under a load (vs. idling). Also, check ignition timing, especially ignition advance mechanisms, for...

Q: Jeep electrical

Hi there. From the description you have provided, leads me to believe you are dealing with a battery problem. The intermittent radio operation is likely, a separate concern. I recommend having your vehicle's electrical issue be diagnosed and repaired by...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.