car shuts off while driving

Car Shuts Off While Driving: Common Causes & Solutions

In Driving by Magnus Sellén28 Comments

car shuts off while drivingWhen you own a car, it is your responsibility to care for it. Many car owners seem to think a car runs on magic dust.

You have to continually check for oil, gas, and water in your vehicle among other things to make sure your car stays fit for a long time.

Having basic knowledge about your car can help you counter a mechanical problem like your car shutting off while running.

In this article, we will shed light on the various reasons why your car can shut off while driving so the next time it happens you are well-prepared.

Possible Causes Why Your Car Shuts Off While Driving

In modern vehicles, there are a lot of different sensors and functions to make your car run correctly. Some parts are more common than others though. Here is a list of the most common causes to look for when your car shuts off while driving.

If you have a newer car and experience the check engine light also, you should read the trouble code memory with a Code Scanner, and you may get a hint of where you should start your troubleshooting. This is a much better method than just guessing and replacing parts.

On older cars, there is no function to read the memory, and you have to carry out troubleshooting in the old way, so check out the most common causes here:

Faulty Crankshaft Position Sensor

The most common problem when it comes to a car which shuts off while driving is a defective crankshaft position sensor. The crankshaft sensor is a necessary part tfor your car engine to run on a lot of car models. On some car models, you also have a camshaft position sensor, which the car uses if the camshaft sensor is faulty.

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In this case, a faulty crankshaft position sensor may not cause the car to stop entirely.

However, if your car is only equipped with a crankshaft position sensor and you get a trouble code on the sensor, you should start by replacing it.

Faulty Fuel Pump/Fuel System

fuel supplyA fuel pump has the responsibility to supply the engine with the correct amount of fuel. If the fuel pump is not providing the right amount of fuel to the engine, then the engine will shut off entirely and you will be left stranded for hours.

The bad news is that there is no bypass for a faulty fuel pump; you have to get it fixed or buy a new one. Furthermore, it is possible that it is the fuel filter and not the fuel pump that has gone bad.

A fuel filter is a small component whose only job is to clean the fuel that goes into the engine. If the fuel filter is clogged, the fuel entering the system will be insufficient and the engine will shut down. Fortunately, it is pretty easy for you to replace a fuel filter.

The third and final thing that could go wrong with your fuel system is a leaking fuel supply line. Petrol or diesel is transferred to the engine from the fuel tank via supply lines. If the supply lines break or are clogged for some reason, your car’s engine can shut off completely while running.

Empty Fuel Tank

If you are driving around without keeping an eye on your fuel gauge, there is a higher chance that your fuel will run out and you could be left stranded on the side of the road. Therefore, it should be second nature to check your fuel gauge at least once during your daily drive.

If you have sufficient fuel for your drive, that is perfect, but if your fuel gauge has gone faulty and it is not showing the real level of fuel in your car, you could have a big problem. If your fuel gauge shows you have sufficient fuel and your car still stops running, you should go get it checked by a mechanic.

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Alternator Problems

An alternator is responsible for managing the supply of electricity in your vehicle. If your car suddenly stops running, it is possible that the alternator has gone bad. A faulty alternator will cut power supply to vital car components and you will notice the lights turning off in the dash or the engine abruptly losing power.

Fortunately, an alternator fails over time and you can sense it going bad. If your car is receiving an intermittent power supply, you should get your alternator checked by a professional mechanic. Alternators are electrical components and they are easily repaired so you are looking at a quick fix.

Faulty ECU

Modern cars are fitted with an ECU, which is a small computer that directs the various car systems and functions. If there is any problem with your car’s ECU you can lose power in your car. Usually, any problem with the car’s ECU is shown by an illuminating the Check Engine Light on your car’s dash.

Once this light illuminates, it is your job to get your vehicle to the nearest mechanic and get a proper diagnosis. If you keep ignoring the eheck Engine light, your car will keep on developing problems, your ECU will fail and your car will shut off while driving. Furthermore, the ECU is not a component that you can fix yourself.

You need to hire the services of a professional mechanic to get out of ECU trouble.

Problems With the Ignition System

The car’s ignition system supplies power to the engine to run. If the system goes bad, your engine will come to an abrupt halt. The first thing you should do is try turning your car keys again. If that still doesn’t start the engine, then you are definitely experiencing an ignition system failure.

You should consult a mechanic for such problems as soon as possible. However, it is possible that it is a small component like an ignition relay that has gone bad. Relays are pretty small but they have an important job of controlling the amount of electricity going through them.

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Just like every other electronic component, relays have a life after which they stop working. The good news is that you can change a relay yourself, you just have to know the correct one to change.

Conclusion

A car often does not stop completely all of a sudden. It gives you signs of failure long before it actually stops working. If you are constantly ignoring these signs, there is a higher chance that your car will stop suddenly. Therefore, you should make a habit of taking your car to a mechanic for regular checkups.

Leave a comment down below if you have any other questions.

Hello I'm Magnus, the owner and the writer of this website. I have been working with cars since I was 16 and I'm specialized with in-depth Automotive diagnostics. Also been driving drifting for the last 6 years. I'm here to give you answers to all your automotive questions and I hope that you enjoy our content.

28 thoughts on “ Car Shuts Off While Driving: Common Causes & Solutions ”

Comments
  1. My car suddenly stops. Then I start it again and it starts. But now, it as stops finally. Have changed the fuel pump and the have also cleaned the nuzzle. Fuel filter as been changed. But still yet , it not starting. It will start after about 40mins, later it will goes off again and it will not start.

    What can be done to it?

    1. Hello
      I had a problem where I was driving and stopped to make a turn started the turn and the engine stopped I had power in the can but couldn’t go nowhere I had to turn off the car and restart it. It ran and got me down to the red light and It did it again while leaving the light. It starts right up but is having problems when it is driving down the road. I have a Chevy trailblazer 2007. Any ideas what it could be?

      1. Hi I have a problem with my Nissan np200 1.6 8valve it shut off while driving I change the petrol pump but it jusdrive for 2days thn it started again .what can be the problem

        1. Hi i have a Subaru liberty station wagon 1984 old car but only 140,000 on clock.
          It stopped while driving but starts straight away for some time then does it again. Any idea what is going on??
          Regards Karen Corscadden

          1. I have a 2011 Lexus is250 and was driving down the street and my radio turned off and then a few seconds later my car did too. Now it dont start, and or nothing turns on on my dash. But my lights still turn on and car still opens and unlocks. So can any one help me and let me know what you guys think it may be . Thank you

          2. I have a 2006 kia Sorrento it shut off while driving there was some smoke coming out from under the hood it started back after 20 minutes but the battery seemed sluggish and was making a ticking sound it has new radiator on it

  2. 2007 Dodge caravan. It will stop while driving then turns itself back on. Also will stop while idling then turns itself back on. What could it problem be.

    1. Fuel pump can do portray this symptoms, dirty mas airflow sensor can do the same, throttle body can equally do the same, while checking those, dust off your air bus replace your fuel filter if your fuel pump happened to be the culprit.

  3. Thanks for sharing this information regarding cars engine. I really found this very helpful And Blog is also very useful for us to get some more knowledge about car part.

    1. Hello have a 03: Dodge caravan…3 and half weeks ago it shut off on my way home…was told not getting fuel…so I changed fuel pump and still want crank then told it was coil pack bought coil pack still won’t crank I have spent 268.00 on new parts still won’t crank….any ideas …what could be next to try….thank you

      1. If it doesn’t crank, you could have a faulty kick starter, dead battery or bad ignition switch

  4. I have a1990 chevy pickup 350 engine runs fine then suddenly dies while driving pull to the side of the road and it starts right back up. may drive 1 mi or 20 mi and it does it again. also it may die when I put it in gear but it will run 5-10 seconds or so before it dies. but always cranks right back up.it started doing this first then later started running the battery down over night (new battery). I disconnect the battery and noticed sparks coming from the battery terminal when u touch the cable to it. checked with volt meter between battery and cable and it is pulling 12 volts. any help would be appreciated. thank you

  5. My Volvo was shutting off while I was driving. Check to see if your key chain is too heavy. I had several items dangling on my keychain and it was causing my car to shut off. Check this first, before you start making costly, unnecessary repairs.

  6. hey..so my car has been stopping itself when driving or when am in traffic..after a while it starts then its stops completely..the engine has been checked its okay..the fuel pump has been changed..but it still refuses to start and times it starts but stops midway..what can be done av run out of options..

  7. My brother in law’s car has a common problem, but it’s just that when he starts the car, he needs to keep his foot on the accelerator to keep the engine on idle.
    When he removes his foot from the accelerator, the engine stops running.
    What would be the problem?

  8. 1989 Ford F150 Pickup manual 5 speed Starts up fine every time if the truck is cold, runs good no sign of failure of any kind that can be seen, felt, or heard. Idles fine, shifts fine, just like it’s supposed to. Dies while driving, may be 1 mile down the road may be 20 miles when it quits. Won’t start up again for a while(may be 5min-may be 50min) even tried pull starting it. Dumped gas in both tanks making sure there was fuel in it. After a while I can start it up and away it goes for a while(may be 5min-may be ??).

  9. I have a 2010Saab 9-3 AWD. It has 108,000 miles and has been maintained regularly. I have not any problems with it until recently. I drive to work everyday which is 40 miles one way. The last month while driving and after approx. 30 miles, the car abruptly loses power and stops. I then wait approx. 15 minutes and the car starts and I may drive about a couple of block and when I have to slow down or stop the car stops running again. It may do this 3 or 4 times until I get to my destination. After the car sits for hours, I then drive back home without any problem. This may not occur again for days but then all of a sudden, the same thing happens. No engine lights come on and I had it at the mechanic but no codes come up and he cannot replicate the problem and cannot figure out what is wrong. I am now frustrated after this occurring the 4th time and cannot be diagnosed, please help!

    Jerry

  10. Have a 2010 Honda Pilot, 225,450 mile car start and run. 2 minutes into driving the car shut off completely, but start back up right away. It keep shutting off cannot accelerate more then 30 to 35 mph. It died on the highways twice. Took it to the dealer had the ECM replacemented after 45 minutes of driving the same problem happen again. They replaced a second ecm it been a month the problem still come back. What can this be, Honda want to do a deep diagnostic i don’t know what that mean. More money.
    Help, help, help, help.

  11. Hi
    i have a bruick lesabre 2005 man car keep cutting off then when i turn the key and the power off and cut it back on it start now i check at auto zone he said everything was good accept my colister but its not misfiring at all so he told me that’s not a serious problem yet we checked my engine it was great my transmission as well and my alternator can it be my battery i just baught it last month so i am puzzled about it RN ……….

  12. I have a 2007 Chevy trailblazer LT and the truck will stalls and now want stay on, I tried the fuel pump but that wasn’t the problem so I have no ideal, you have any?

  13. I HAVE A TOYOTA COROLLA SPRINTER 1996 CHASSIS NUMBER AE 110-0077463 . SOMETIMES IT DOES NOT START AND IT OFTEN CUTS OFF THE ENGINE WHILST IN MOTION.

  14. My Chevy Silverado will shut off while driving but comes right back on without touching the key. Also it will start with the key in my pocket it has remote start could this have anything to do with it stopping?atlene

  15. Hi i have a 2001 mazda protege and when i start it it shakes and sounds like it is gasping for air when i try driving it u can get it to go maybe 100 feet then it shuts off can you please give me any advise please againe thank you kelly

  16. I hav MercedesBenz c200 1997. Some days ago it stopped during driving. I gues May be fuel gauge not working. I put some Petrol in it. Then engine start I think problem is over. But engine shut off again, again I put some Petrol in it , is start again and after some drive it stopped again. What’s the problem..,

  17. Hi my car just switch off while I’m driving and it displays all the lights in the screen like battery lights water and airbags,alternator was checked and battery still fine.

  18. Due to a very high demand and high ammount of comments, you have to wait for some time for your car questions to get answered. If you want to get fast answers from a certified master technician you can ask your questions here:
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