Skip the auto shop - Our mechanics make house calls

Q: Car stop accerating while I was driving

asked by on

Car stop accerating while I was driving then when i stopped and cut it off it won't start it acts like it want to start .lights work In the car I have a quarter tank of gas.

My car has 187000 miles.
My car has an automatic transmission.

A: Hello. The vehicle stalling can be caused b...

Hello. The vehicle stalling can be caused by several faults. Typically to blame are fuel delivery and spark. You can perform a series of tests to eliminate some of the options. Start by using a spark tester to see if the voltage for the spark is reaching the plugs. Disconnect the wiring boot from the spark plug and test there. Crank the engine and make sure the distributor and wire are working. If the spark passes its test, then hook up an in-line fuel gauge after the filter and test the fuel pressure upon cranking. You should also be able to hear the fuel pump priming if you turn the key to "on" before starting it. If you do not hear a "whirling" you may have a faulty fuel pump. Another test for the fuel system is to spray starter fluid in the air intake and see if it makes a difference when starting. This would indicate fuel delivery is an issue. You may also want to attempt to scan the vehicle for troubleshooting codes. You may be able to pull some without the vehicle started. At this point different tests need to be performed to confirm or eliminate those systems are having issues.

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: Car key jammed.

Most likely the problem is with the ignition cylinder. These fail quite regularly on vehicles like yours. A trained technician, such as one from YourMechanic, will be able to inspect and repair your ignition.

Q: White smoke.

If you are not having any loss of coolant in the system or any excessive oil consumption, then the exhaust may emit a small amount of white smoke from the exhaust. The smoke is a small amount of moisture that...

Q: No fire when starting my car

Hey There: Sorry to hear about the problem you're experiencing with your 97' Pontiac Firebird. What you're describing actually happened to an acquaintance of mine last year. He tried every trick in the book, including the "gas in the spray...

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...
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...
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.