Q: My car shuts off while driving and then turns back on multiple times or shuts off after driving and car turns off.

asked by on December 19, 2016

It didn't start until I was in a backing accident. After getting the car fixed the a/c and car radio would shut off and come back on. Then when I would turn the car off nothing would work. The horn, popping the trunk or gas door. After the car sits it would be fine. It stopped for a while. I got it checked out and had a bad diode alternator. I got it replaced and it started happening again. Now the car will stall and shut off and nothing will work or it will turn off while driving and then start back up. The heat/radio still constantly shuts off and now thw warning light and abs light will come on and stay on. Then after awhile with the car running fine it will act up and then the lights will turn off. The starter is fine and battery. I don't know if something is overloading the alternator or a bad sensor.

My car has 126000 miles.
My car has an automatic transmission.

Electric Problems Inspection $79.99 - $99.99 Get a Quote

Hi there. Check the alternator and make sure that the wiring it connected tight. Check the battery cables and make sure that they are tight and clean. Look for any loose ground wires to the chassis on the vehicle. If everything checks out to be working correctly, then the PCM may need to be replaced as it may have a battery disconnect condition. If you need further assistance with multiple functions shutting off, then seek out a professional, such as one from Your Mechanic, to help you.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

I am reading different thoughts on the problem my car is experiencing. I have a 2013 Ford Edge sport 3.7 and when accelerating, the [engine](/topics-engine-ford/) light blinks and the engine jumps and hesitates. I have read that it may be [spark plugs](/topics-spark-plug-ford/) and coils or it may be the mass airflow sensor. I have 143k miles and have the original parts under the hood. What is you thought on the likely cause?

I recenlty changed the window regulator on my 2009 pontiac g5. After that, the car started to experience reduced engine power. Che

You cannot have a used ECM installed since it was programmed to old car. You will need to have a new or remanufactured one and have it programmed to work for your car and theft system. If the battery got...

Mistaken Fueling With Non-ethanol fuel

Hi There, Vehicles from 2001 and newer are able to operate on fuels that contain ethanol levels from 0-15%. If your vehicle happens to be a flex fuel vehicle, this would allow it to operate on fuels containing anywhere from...

How many control arm bushings are needed on 2008 XJ8 front suspension?

You will have two inner bushings for each control arm and one outer ball joint for each arm. You have upper and lower control arms.

Slow coolant loss

Put a clean sheet of paper or cardboard under the car when you park it at the end of your day and check it the next morning for spots. You may or may not see something helpful. If not, sometimes...

I can't get the car to turn over

To start, computers, aka PCM (powertrain control modules) rarely fail. They are complex units that require many different inputs to initiate the desired response. Having replaced your PCM already, you may have already traded in your old PCM as a...

Stalling at Idle

There can be many reasons for an engine to stall. Since the Check Engine Light is on I would start with scanning the computer for codes and moving forward with a diagnosis from there. You may have a vacuum leak...

How do I fold the rear seatbacks?

Both sides of the rear seatback can fold down, which allows you extra storage space, or an opening to the trunk. Folding the rear seatbacks is very simple: Make sure that the front seats are not reclined. If the...

What is the correct driving posture for my car?

Driving safely requires that you have the right position and posture when you’re behind the wheel. Not sitting properly in the seat can limit your view, limit your control of the vehicle, and put you, your passengers and others on...

Related articles

10 Biggest Car-Related Headaches and What to Do About Them
You You don’t want to, but if you're a car owner it's inevitable that at some point you will experience car troubles. It's also fairly certain that the machine you rely on will cause you grief when you least expect...
The Best Used Cars to Buy If You're an Uber or Lyft Driver
Are Are you thinking of becoming a driver for Uber or Lyft? That could be an exciting career change – you’ll get to meet a lot of interesting people, and if you love to drive, what better way to spend...
The Best Used Cars to Buy If You Love Camping
Do Do you love camping, getting back to nature and enjoying life in the great outdoors? If you do, then you know that getting there can be half the fun, and it’s even better if you have a great ride....