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5 Reasons Why Your Car Is Stopping Suddenly

There are days when your car won’t start. And, there are days when your car suddenly stops. 

If your car is stopping suddenly, it is a bigger problem than not starting at all.

If your car didn’t start at all you could decide to proceed with your travel through any other car or any other transportation. 

But when your car stops suddenly, you have to park your car in the middle of the road. You will be late to work. What if you plan an important journey and your car stops exactly when you exit the city? It’s devastating, right?

In this blog post, we will discuss the major reasons why your car is stopping suddenly.

car is stopping suddenly on the roadside

Reasons Why Your Car Is Stopping Suddenly

  1. Engine Overheating
  2. Low Levels of Transmission Fluid
  3. Problem With Alternator
  4. Faulty Fuel System
  5. Clogged or Problematic Catalytic Converter

There could be many other reasons why your car is suddenly stopping, we are discussing the most common reasons.

1. Engine Overheating

overheated car engine

Engine overheating can cause your car to suddenly stop. This is by far the most common reason for that. If your engine overheats this causes the whole system and the flow of work of spare parts associated with it. 

Moreover, It increases load over the engine which in turn stops the car from operating.

The most common reasons for engine overheating are insufficient coolant, faulty radiator, low engine oil, low-quality engine oil, clogged coolant hose, and many other problems. Make sure you take care of engine maintenance.

2. Low Levels of Transmission Fluid

Transmission Fluid Check

The transmission fluid of your car is responsible for maintaining and lubricating the transmission system of your car. The transmission system of your car includes different gears and clutches.

When there is a reduction in the transmission fluids of your car, this creates problems in the system, there is more friction in the transmission system, which causes the car to stop suddenly.

The transmission fluid is not supposed to be changed as frequently as the engine oil. But it has to be checked at a regular schedule for your car service.

(Refer to this blog to know about changing of oil filter)

3. Problem with Alternator

Car Alternator problem

The Alternator of your car generates electricity as you drive. This electricity is used for electric-based appliances in your car like your headlight, Air conditioning system, Speakers of your car, and simultaneously recharging the battery and many other such electrical needs.

Most importantly, the electricity generated by the alternator is used in generating the sparks in the spark plug. This runs the combustion engine properly. 

So, When there is any problem with the alternator of your car, it directly affects the functioning of spark plugs. No spark ignition stops the combustion process of the engine. Hence, the Alternator is an important electric car part of a vehicle.

Improper functioning of the alternator is one of the major reasons why your car is suddenly stopping.

4. Faulty Fuel System

Fuel system reference image

The fuel system ensures a proper supply of fuel to keep your car running. This includes the fuel pump which is responsible to provide the correct amount of fuel supply to the engine. If there is less supply of fuel, your car will immediately stop.

Along with that, there could be problems with the fuel filter. The fuel filter ensures the cleanliness of the fuel supplied to the engine. If the fuel filter is clogged, there will be a decrease in the smoothness of fuel supply and hence the fuel reaching the engine would be less. A clogged fuel filter is a reason for your car to stop immediately.

And, the most obvious reason for your car suddenly stopping could be the lack of fuel in your car. Please keep monitoring the fuel gauge in your dashboard. If the fuel is low, it will suddenly stop.

Also, if you want to

5. Problematic Catalytic Converter

car problems - Car exhaust

Unlike other components mentioned in this blog post, a Catalytic converter comes in the exhaust system of your car. 

The Catalytic converter is responsible for cleaning the exhaust fumes. It reduces the harmful gasses like carbon monoxide, nitrogen dioxide, hydrocarbons, nitric oxide, etc, and chemical reactions change these gasses into carbon dioxide and water vapors.

When there are too many impurities and the cleaning of the catalytic converter is pending for a long time. There is clogging in the catalytic converter. This result is overload to the engine and the complete system.

Clogged or problematic Catalytic Converters can cause your car to suddenly stop.

Read more about Catalytic Converter: The Ultimate Guide To Car Spare Parts


These kinds of problems happen only when you are not regularly checking and servicing your car. It is always recommended to do regular maintenance of your car and check the auto spare parts.

FAQs (Frequently Asked Questions)

One possibility is that the fuel system is not delivering enough fuel to the engine. This can be due to low fuel, problems with the fuel pump, fuel injector, fuel line, or fuel filter. Another possibility is faulty the ignition system. Or, the engine may be overheating due to a problem with the cooling system. This can be due to a problem with the radiator, water pump, or thermostat.

Yes. When the engine gets too hot, it can cause the car to stall or even stop working altogether. If you’re driving and your car starts to overheat, it’s important to pull over and turn off the engine as soon as possible. Once the engine has cooled down, you can check the coolant level. If the car continues to overheat, it’s best to take it to a mechanic to have it checked out.

If you’re experiencing sudden stops while driving, it’s possible that your alternator is to blame. The alternator is responsible for supplying power to the car’s electrical system, and if it isn’t working properly, the car’s electrical system can’t function properly. This can cause all sorts of problems, including sudden stops.

One possibility is that there is an issue with the starter motor. If the starter motor is not working properly, it can prevent the engine from starting.

Another possibility is that the battery may be weak or dead. If the battery does not have enough power to start the engine, the car will not start.

There could be a problem with the fuel system. If the fuel system is not delivering enough fuel to the engine, the engine will not start. It is best to take it to a mechanic to diagnose the problem and get it repaired.

No. The low battery will not shut down a running engine or a running car. Because the car alternator generates the required electricity in a running car and this electricity is supplied to the car.

However, If your car battery is low, you could experience problems in starting your car.

In a normal scenario, low engine oil doesn’t necessarily cause the sudden shut down of your car. However, Low engine oil causes overheating and other engine problems which could result in the shut down of the car after a particular time period.

In recently launched cars, there are sensors that detect low engine oil and for safety reasons, the car automatically shuts down the car, in case of low engine oil.

We highly recommend you to have high-quality engine oil for your car, so that these problems do not occur.

Noorhan Auto Parts Dubai is a leading supplier of Auto Spare parts in Dubai. We have spare parts discussed in this blog including Quality Engine Oil, Transmission fluid, Alternator for your car, Spare parts for the Fuel system in both varieties: Genuine Auto Parts and Aftermarket spare Parts.