Car Engine Won’t Turn Off

If your car engine won’t turn off, it can be a scary and dangerous situation. Here are some things you can do to try to fix the problem:

1. Check the ignition switch

The ignition switch is the most common cause of a car engine that won’t turn off. The ignition switch is responsible for sending the signal to the engine to turn off. If the ignition switch is faulty, it may not be able to send the signal to the engine, causing the engine to stay running.

To check the ignition switch, turn the key to the “off” position. If the engine continues to run, the ignition switch may be faulty and will need to be replaced.

2. Check the fuel supply

If the fuel supply to the engine is cut off, the engine will eventually stop running. However, if the fuel supply is not cut off, the engine may continue to run even if the ignition switch is turned off.

To check the fuel supply, open the hood and look for the fuel line. The fuel line is a black or gray hose that runs from the fuel tank to the engine. If the fuel line is disconnected or leaking, the engine will not be able to get fuel and will eventually stop running.

3. Check the throttle body

The throttle body is a valve that controls the amount of air that enters the engine. If the throttle body is stuck open, the engine will continue to run even if the ignition switch is turned off.

To check the throttle body, open the hood and look for the air intake. The air intake is a black or gray tube that runs from the air filter to the engine. The throttle body is located at the end of the air intake. If the throttle body is stuck open, you will be able to see the butterfly valve inside the throttle body open.

4. Check the electrical system

The electrical system is responsible for providing power to the engine. If the electrical system is faulty, the engine may not be able to receive the signal from the ignition switch to turn off.

To check the electrical system, start by checking the battery. The battery is located under the hood. If the battery is dead or weak, the engine will not be able to start. If the battery is good, check the alternator. The alternator is responsible for charging the battery. If the alternator is faulty, it may not be able to provide enough power to the engine, causing the engine to continue to run even if the ignition switch is turned off.

5. Call a mechanic

If you have checked all of the above and still cannot get your car engine to turn off, you should call a mechanic. A mechanic will be able to diagnose the problem and fix it.