The cause of the Check Engine Light turned on in a car

Modern cars are run by computerized systems that constantly monitor vehicle performance efficiently. When damage is detected, check engine light (CEL) will be lit up on the dashboard so that the driver knows that a problem has been detected. Unfortunately, the light itself does not tell the driver what the problem is, the problem could be from the CAP loosely on the gas tank or a problem with the catalytic converter.

Fortunately, the check engine light on, engine control unit (ECU) of the log will appear one or more codes that can help drive mechanics against the source of the problem. If the Check engine light appears is not necessarily a major problem or necessary repairs are expensive. However, driving a car with the check engine light turned on could mean damage has occurred. It would be better to let the vehicles checked immediately for the sake of your convenience.

Gas Cap loose or missing

If the gas cap loose or missing vehicle, car computers can record this as a problem with the emissions system. Gasoline from the tank can evaporate, which will lower mileage cars. This problem is usually very easy to repair and replace the cap is also very cheap

The issue of electronic fuel injection system

The engine includes a number of systems that work together to provide excellent performance under normal circumstances. Most modern cars are powered by a system of electronic fuel injection (EFI), which uses a number of valves and sensors to ensure the correct amount is between air and fuel that goes into the piston Chambers to create the right mix of combustion. Mass flow sensor and oxygen sensor (O2) is an important part of this system, and can cause significant damage to the light turned on. Problems in other systems can affect your EFI, including catalytic converter, so it is important to fix it immediately.

Spark Plugs Wear Out

Time a spark also controlled electronically. If the spark plugs are worn out or misfiring, it can cause the car jerks during acceleration. Bad or damaged cables can also cause misfires. Plugs and cables to be replaced relatively easily and can improve the performance of the car.

Vacuum Leaks

The other thing that often gives raise to constraints on check engine light is a vacuum leak. Hoses or manifolds may be loose or cracked, which will interfere with the air fuel ratio in the engine. A visual inspection can be helpful, but in some cases a vacuum leak may be very rare. Some repair workshop offers a test of smoke, where the system of air intake and hoses were filled with smoke, and then monitored to see where the error occurred. Vacuum leaks which can trigger the check engine light including exhaust gas recirculation (EGR) valve is sticky, or more seriously, head gasket leak.

Catalytic Converter problems

Catalytic converter is part of the emission system, where parts that can convert the gases that are less dangerous, created by combustion in the engine exhaust. On the car is maintained on a regular basis, this part is rarely a problem occurs. If the other parts, such as the O2 sensor or plugs, the crash and not immediately replaced, this may damage the catalytic converter. This is a very expensive repair, but the car cannot run without it.