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?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  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: Hi I have a 2001 s10 that seems to have a wiring issue or something.

Hi there. Check the battery and make sure that it can hold a charge. Even though a battery can have 12.6 volts, it could have a bad cell causing a large draw. Place the battery on a load and see...

Q: 2001 Mercury Sable, 125,000 miles give or take. It is suspected that the tranny speed sensor is at fault. Automatic, 6 cylinder

Claimed by Andrew Quinn

Q: Q: Windshield wipers not working.

This seems like the switch is on its way out, I would have a certified mechanic verify that 12 volts is being applied to the windshield wiper motor. If power is present and the wiper isn't working its the motor,...

Related articles

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...
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.