Skip the auto shop - Our mechanics make house calls

Q: Car stopped running during use on the highway and won't restart.

asked by on

Car stopped running during use on the highway and won't. Last week replaced a starting fuse and it fixed it temporarily. Same problem again. I'm unsure of what to do to fix the problem. Haven't checked the fuse that was replaced last week.
My car has an automatic transmission.

A: Thanks for inquiring with YourMechanic. I b...

Thanks for inquiring with YourMechanic. I believe your issue is going to be your alternator. The reason I am going this way is because your car isn’t starting and it just stopped running on your on the highway. The reason it would be your alternator stopping your car from running is because it drained your battery. Your battery can recharge with time if it is still a good battery. If you want to check it to ensure it is your alternator you can get a multimeter. Check it by starting your car and while it is running, connect the positive and negative probes to their respective places to and ensure it reads 14 volts. If it is anything less, it’s not charging your battery properly. Also, if you have to jump your vehicle to start it, once you take the jumper cables off and it shuts off on you right away, that is your problem. I hope this helps and I hope I’ve led you on the right track to fixing your car. If you need help replacing your alternator, I would recommend a professional mechanic, like one from YourMechanic do the replacement for you.

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: Key stuck in ignition

Hello there, a key getting stuck in your ignition is a common fault with your 2002 GMC Sonoma. The most common cause would be a worn key, faulty key cylinder, ignition switch, steering wheel lock, or a wiring harness fault....

Q: Need to know if my alternator is bad.

Hey there, thank you for asking about your 2005 Chevrolet Silverado 1500. Disconnecting the battery while the vehicle is running can damage the Powertrain Control Module (aka, vehicle "brain" or "engine computer") or other electrical components due to voltage excursions...

Q: Lifespan of the battery and alternator in my car

The average lifespan of a battery will depend on your geographic location and the relative weather conditions there. In extreme heat or cold conditions batteries do not last as long due to the harsh temperatures that affect the longevity of...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.
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.