Skip the auto shop - Our mechanics make house calls

Q: I think the fuel pump is going out. Can you diagnose this?

asked by on

I looked up on Google fuel pump issues but there also can be other issues, I want to fix the problem but need to know exactly what the problem is first. It stalls out its hard to start , sometimes just turns off, I'm trying to get the car smogged

My car has 266000 miles.
My car has an automatic transmission.

A: Hello. Yes, the fuel supply system can be e...

Hello. Yes, the fuel supply system can be evaluated by YourMechanic during a mobile visit. Typically, one is looking for supply pressures and volume of supply that are within spec. Sometimes a faulty pressure regulator or a fuel filter restriction (clogged filter) can be a cause. Indeed, if you are still on your original filter, this would not be unreasonable to replace the filter simply as a maintenance item.

If your original pump has 266,000 miles, it would not be surprising to find the pump tests bad (out of spec) but again, that has to be tested. If there is nothing wrong with the fuel supply (of course, as part of that the fuel injectors have to be evaluated), typically to diagnose a rough running condition, a diagnostic scope (or oscilloscope) is applied to determine whether a "global" fault (i.e., all cylinders) exists or whether you have one or a couple "faulty cylinders" where the fault is a bad plug, wire, coil, or even injector. If you would like to have the stalling problem diagnosed, you can enter your vehicle information on our website to schedule an appointment.

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: Power steering not working in a 1997 Isuzu Rodeo

Hi. There are only a few things that could cause the power steering to not work. The belt, pump, or faulty hose. Though the most common cause of power steering failure is fluid starvation. I would suggest having a technician,...

Q: My door will not latch closed. 2003 Ford Taurus

Hi there. It sounds like the latch assembly is freezing up. This commonly occurs in cold weather if the latch is old and if there is any debris built up in the latch. In some cases cleaning it out with...

Q: Problem with shifting positions

It may very well be that your vehicle has a problem that is causing reduced power output. Some such things could be: Faulty fuel pump Faulty oxygen sensor Vacuum leak When any of these occur, the...

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...
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.