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Why the car turns on and off immediately: causes and solutions

Posted by Mike Earthling
Last Updated:August 26, 2023

How many times have we tried to start our car and notice that instead of staying on, it turns off immediately after?

This problem can be extremely frustrating and can occur for a variety of reasons. In this article, we will explore the possible causes of this problem and we will provide some useful solutions to fix it.

Why the car turns on and off immediately: causes and solutions

Common causes for the car to turn on and off quickly

Generally, the most common problems that cause the engine of our car to stop prematurely are essentially two, let’s see them together.

  • Battery problems: One of the most common reasons for a car to jump on and off instantly is a dead or malfunctioning battery. A insufficiently charged battery may not be able to provide enough energy for start the engine. Furthermore, i loose or corroded battery cables they could affect the connection and cause the power to go out.

  • Power supply system: Problems in power supply systemlike one faulty fuel pump o one fuel filter cloggedcould cause a insufficient fuel flow to the engine. This could prevent the car from keep functioning once started.

    • Here are the possible solutions

  • Checking the Battery: If you suspect that the battery is the cause of the problemcheck i battery cables to make sure they are well connected and free from corrosion. I know the battery seems deadit could be necessary recharge it using a charger or replace it if it is damaged.

  • Fuel control: Check if the tank contains sufficient fuel and if the fuel pump is working properly. Also, you may want to replace the fuel filter if it is dirty or blocked.

    • Why the car turns on and off immediately: causes and solutions

    Other possible causes if the car turns on and off immediately

    Obviously the causes can be many and even if we have seen that in most of the times the common causes are the same, there are other possible factors that could affect making the car stop immediately after starting, let’s see these too.

  • Ignition system: Faults at spark plugs, spark plug wires o ignition coils could prevent the engine to stay running after startup.

  • Electronic system: Problems in sensors or in the modules of the electronic system of the car could affect the engine management and cause sudden shutdowns.

    • Here are other possible solutions

    Ignition system:

  • Replacing the spark plugs: If the spark plugs are worn or damaged, replacing them with new quality spark plugs may solve the problem. Make sure you use spark plugs that are compatible with your car model.
  • Checking the spark plug cables: Check the spark plug wires for any damage or deterioration. Replace wires if necessary and make sure they are properly connected to the spark plugs and coils.
  • Checking the ignition coils: The ignition coils are responsible for supplying the spark to the spark plugs. If one or more coils are faulty, they could cause the ignition to fail. Check the coils and replace them if necessary.

    • Electronic system:

  • Electronic system scan: Use a diagnostic scanner to locate any fault codes stored in the electronic system. These codes can provide valuable clues about problem areas.
  • Inspection of sensors: Checks critical sensors such as the air temperature sensor, oxygen sensor and camshaft position sensor. Faulty sensors could cause the engine to run poorly.
  • Verification of electronic forms: Modules such as the engine control module may be affected by electronic failures. If you suspect a module-level problem, you may need to see a professional for an accurate diagnosis.

    • Why the car turns on and off immediately: causes and solutions

    A few more little tips

    Examine carefully the other possible causes dell’sudden on and off of the car is essential to solve the problem effectively.

    Give her defective spark plugs ai electronic sensor failureseach component plays a fundamental role in the correct functioning of the engine.

    Remember that if you do not feel comfortable addressing these issues on your own, it is always advisable to consult a qualified professional.

    Regular maintenance and looking out for signs of malfunction can help keep your car reliable and in top shape.

    And did you know about these possible problems? Let us know in the comments and don’t forget to stay tuned to the tuttotek engine pages!