Skip the auto shop - Our mechanics make house calls

Q: Vehicle acting like it is full.

asked by on

When pumping gas, I have to hold on to the pump handle. Otherwise, it keeps turning off like the gas tank is full, when it's not.

A: Your vehicle is equipped with an emissions ...

Your vehicle is equipped with an emissions system that keeps evaporating fuel vapors from entering the atmosphere. When your Ford it turns off the vent valve in the system should open and allow the pressure to release and the pump to work until the tank is full. When this valve does not open, or if there is a restriction elsewhere in the system then the problem you are having occurs. Most of the time replacement of the valve, which is located under the rear of the vehicle will solve it. I would not simply just replace this valve though as it may not be the problem. The best way to diagnose this is with a smoke tester and a scan tool to cycle the valves in the system. The best way to achieve this is by getting help from a certified mechanic, like one from YourMechanic, that has the tools to do this.

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・Save up to 30%

Get a quote

What others are asking

Q: Battery dead truck wont start after alarm being messed with.

With all the playing around, the battery going dead more than once, and it being over 5 years old, I would try replacing the battery first. After the battery is replaced, lock all the doors and then unlock the vehicle...

Q: Car struggles to start

If the car is struggling to start, the most common cause is the battery. If the battery voltage is low, not only would it cause starting issues, but it would not provide the proper voltage to all the car's traction...

Q: Car stopped working and starting up - 2001 Mercedes Benz C240

The C240, like all Mercedes built in this century, is a very complicated car and is subject to a number of electronic failures. The ESP on the warning light stands for Electronic Stability Control which exerts a certain amount...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.