Q: My car is turning off while I idle

asked by on

I had changed my alternator and battery three months ago. Now my check engine light came in and the codes run for a lean o2 sensor . Now I'm expirencing a problem where my car won't hold a charge and if I jump it off it will cut off while I'm Idling

My car has 87000 miles.
My car has an automatic transmission.

Hello. If the car will not hold a charge then either the new alternator is not charging or there is another electrical issue. Most of the time this is caused by a bad connection at the alternator.

As for the leak code and the idling issue it sounds like there is a vacuum leak. It can be an issue with a defective idle control valve that is stuck open or a vacuum leak in one of the vacuum hoses. I usually check the hoses first and then I test the idle control valve. Once I can get the car to run right I can test the charging system.

If you are planning on having this charging system and lean condition checked, consider YourMechanic, as a certified mechanic can come to your home to diagnose the issue and make an accurate repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car is turning off while I idle

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: Engine stalls. Then after 5 minutes or so it will start back up.

Either there is an issue with the brake system or the transmission. If the brake system is free and you can push the vehicle is neutral, then the issue lies with the transmission. The transmission may have a clutch that...

Q: Brakes won't stay pumped and fluid overs the area where u fill it up at

If you are bleeding the brakes out and keep getting air in the system then you test system and it still feels like it has a low pedal again. The brakes are bled again and gets air in it again...

Q: When accelerating after a complete stop, turning corners, coming to a complete stop or randomly when Parked a very odd vibrating

Hello, thank you for writing in. The vehicle may be suffering from several different issues. In this type of situation you want to start with the least complicated option, and work your way up. Start by making sure your tires...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...