For most drivers, there’s almost nothing that causes more fear than having your car shuts off while driving. What makes this problem worse is that it’s not only uncomfortable but also hazardous. If this happened to you, many people have gone through a similar experience. There are usually several reasons this can occur, and figuring out the cause helps you deal with it safely.
We’ll outline the seven major causes behind this issue and guide what to do when it occurs.
Reasons Why Does a Car Shuts Off While Driving?
It is usually due to an electrical or mechanical issue when your car stops while driving. There may be an issue with the engine, the fuel, or the vehicle’s electronics. It’s essential to determine the cause of the problem and learn how to resolve it safely.
Now, we will examine the seven important reasons this might be happening.
1. Fuel System Issues
To avoid stalling, your engine should be fed fuel regularly. Problems with your fuel pump, a clogged fuel filter, or running out of gas can cause your vehicle to stop right there.
What to do?
- Stop in a place where you can park securely.
- Make sure to start by looking at your fuel level (because it may have run out).
- If the level of fuel looks good, take your car to a mechanic for a checkup of the fuel pump and filter.
2. Faulty Alternator
An alternator generates electricity for your car’s electricity system and also charges the battery. A breakdown may result in the loss of power to your drive, and your car will eventually shut off.
What to Do:
- Be aware of dim lights, a dead battery, or any warning messages on the dashboard.
- If the problem may be with the alternator, check it and have it repaired as soon as possible.
- Watch out for the early signs, as they often indicate that things aren’t going as they should.
3. Bad Crankshaft Position Sensor
This sensor is responsible for tracking the crankshaft’s position and rate of rotation. Without warning, your engine can stop working if the injection system breaks down.
What to Do:
- You could see that your check engine light has switched on.
- With an OBD-II scanner, you can check for sensor trouble yourself or request a mechanic to do it for you.
- Changing the sensor can be a solution if it’s faulty and not too expensive.
4. Problems with the Ignition Switch
If the ignition switch is worn out or broken, hitting a bump or jiggling the key might cause your car to switch off while you are driving.
What to Do:
- Try to move the key up and down (if the ignition switch is the problem, the vehicle may stall during the test).
- Ensure your keychains are not so heavy that they accelerate the weakening of the ignition switch.
- Let a qualified technician inspect and replace the spark plug.
5. Overheating Engine
Engines are designed to operate at high temperatures, but they must never become too hot. If the car overheats, the safety feature may shut down the engine to prevent significant harm.
What to Do:
- Safely come to a stop along the side of the road.
- Allow the engine to cool before opening the hood.
- Review the coolant level and look for any possible leaks.
- Address radiator or thermostat issues by consulting a mechanic.
6. Issues Related to Electrical Wiring
Damaged or faulty wires may cause your car’s engine control unit (ECU) to lose power, potentially shutting down your vehicle while you are driving.
What to Do:
- Be alert for abnormal flashing lights or any unusual behavior from the electronics.
- A skilled mechanic will be able to look at your car’s wiring harness.
- It is essential to avoid complex DIY electrical jobs unless you have relevant experience.
7. Malfunctioning Mass Air Flow (MAF) Sensor
The Mass Airflow (MAF) sensor determines the amount of air entering your engine. If you receive incorrect information from your fuel level sensor, your engine may run either too rich or too lean, and it may eventually stop.
What to Do:
- The signs of this issue include rough idling, poor acceleration, and stalling.
- You can resolve the issue by cleaning or replacing the Mass Airflow (MAF) sensor.
- Use replacements that are either OEM or another good-quality sensor.
How to Prevent Your Car from Shutting Off While Driving
- Follow the service plan for your car as recommended in the owner’s manual.
- Never disregard any warning lights that come up on your dashboard.
- Pay attention to how your car sounds and drives. Changes could indicate that something is wrong.
- Check the electrical and fuel systems: This is particularly important in older or high-mileage cars.
Frequently Asked Questions (FAQs)
Q: Can a dead battery cause my car shuts off while driving?
Most of the time, observers do not do this. When your car starts, it means the battery performed well. If the alternator is not functioning correctly, your vehicle may shut off due to a lack of power.
Q: Is it okay to continue if the car stops running briefly and starts again?
A: No. When your car won’t start when you need it, it can be dangerous and put you or others at risk. Do not delay in getting it checked.
Q: What will be the cost to repair this issue?
A: The cause of the problem determines it. You can expect to pay around $100–$300 for a sensor replacement; however, alternator or wiring problems may require additional costs of around $500 or higher.
Also Read: Winding Road Sign Meaning and Its Importance
Conclusion
A car that shuts down while being driven can be frustrating and poses a safety risk. Most often, early maintenance and remaining vigilant can prevent these problems from occurring. When you identify the issue promptly, it can prevent you from incurring huge time, money, and stress costs.
Ensure you obtain information about your car and don’t skip regular check-ups. If you notice any warning signs, have your vehicle inspected right away. Road conditions can be uncertain, yet your vehicle ought to be reliable.
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