Why does a car turns off while driving?

Answer 1

It all depends on what you can notice.

If your dash lights and all other light components stay on its most likely not a battery problem but if all lights do turn off check your battery terminals for corrosion and recharge your battery.

If you are driving and your vehicle stalls or turn off on you while all lights are still one its most likely a fuel problem.

in this case disconnect the battery and afterwards remove your fuel filter you will notice gas leaking while loosing it but let it finish leaking and remove it completely afterwards.

On a clean area shake the gas that's still in the filter to see if its dirty.

if it is dirty you will see a almost black color or brown color. If you notice a brown rust like color it may be a sign your gas tank has corroded which you will have to replace the gas tank and get a new one.

(The fuel pump may have been damaged so you may also have to replace it.)

Replace the fuel filter they are around 15 dollars or less depending on the brand at autozone or other auto parts store.

make sure when you are replacing it that the tightening components are tight or fuel will leak. One way to check if they are tight enough have someone turn the vehicle on and while on park press the gas pedal gradually all the way while you check for any leaks if it doesn't leak it was installed properly if not it will leak so if it leaks just disconnect the battery both terminals and go under and tighten even more.

if the vehicle doesn't turn on after you replace the fuel filter while off keep pressing on the gas pedal and try to turn it on if still doesnt turn on use started spray and spray it on the intake tube of the air filter.

Answer 2

Can be multiple causes like running out of fuel/ bad fuel pump, but most have to do with electrical issues- loose battery/ground cables, crank/cam sensors, ignition module. You need to have the computer checked with a scan tool and the error code will guide you to the cause.