Skip the auto shop - Our mechanics make house calls

Q: Car keeps stalling car, I think it's the fuel pump

asked by on

Hi, so this is what my car does and I've did an experiment on it because I feel like I finally know what the problem is. My car will stall out about a mile or 2 no more than three miles of driving when I get to a stop light , stop sign or slow down. What also happens is that the battery light will come on. I have to put the car in park . Turn it off and then turn it back on, works fine. I believe it's the fuel pump . Because when I go to get gas , the car stalls for about 2-3 mins but now it has been going on longer. So in my experiment, I've kept my car full and didn't let it go pass half for 2 weeks, only stalled on me once and I had a full tank. Now I have under a full tank and it has repeatedly done that. Have I found the solution and need to replace my fuel pump?

My car has 121000 miles.
My car has an automatic transmission.

Hello - I applaud your diagnostic skills! You have certainly identified a classic failure mode of a fuel pump with extended mileage such as yours. Your fuel pump is located in the tank and is cooled by the gasoline there. With a half tank (or less) of gas, the fuel pump isn’t being cooled as well. A worn pump generates more heat and will stop working when it gets too hot. Well done! I would recommend having a professional mechanic, such as one from YourMechanic, replace your fuel pump to repair this problem.

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

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: Car won't start

A motor that cranks slowly is do to a high resistance in the starting motor circuit. The clicking noise is the result of a low voltage at the starter. This same symptom can be a result of a battery that...

Q: Car won't start after replacing fuel pump

Hi there. If the car was running fine prior to the pump being replaced, then you may have a defective pump. If the same problem was occurring before the fuel pump was replaced, then there may be a circuit problem....

Q: Why does my power steering warning light come on in my 2013 VW GLI

Hi there. Most of the time when this occurs it is due to a lack of voltage. It can be from a failing battery or alternator. Most of the time the issue is the battery. If the voltage is dropping...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...