Diagnosing Check Engine Light Problems
Few things related to your automobile can be as disheartening as the check engine light coming on. While many people fear the worst as soon as this light comes on it may actually be only a small problem. However, that little issue will grow worse if it is not addressed so be sure to get to the repair shop right away. In this list of common check engine problems we start with a worst case scenario.
Catalytic ConverterThe catalytic converter is designed to convert hazardous exhaust fumes into less harmful emissions. It will almost never become damaged unless some other part or sensor fails first, which would cause excessive amounts of unburned fuel to travel through it. If the check engine light diagnostics reveal a faulty converter it is likely the light has been on for some time and now you're in for one of the most expensive types of auto repair.
Oxygen SensorThe oxygen sensor is one of the things that can cause a catalytic converter to go bad. This sensor is located in the exhaust system and monitors how much O2 is in the exhaust in order to help dictate how much fuel is sent to the combustion chamber. If it fails or if there is an exhaust leak it will read excessive oxygen, thus sending more and more gas to the engine.
MAF SensorOn the other end of the car is the mass airflow sensor, which measure the amounts of incoming air and calculates how much should be mixed with the gasoline. A failed MAF sensor can also cause the car to run rich, thus lowering your MPGs and damaging other parts.
MisfiringMisfiring, which results in lowered fuel efficiency and a rough running engine, is usually caused by dirty or corroded spark plugs or spark plug wires, or possibly because of failing ignition coils, as well as other minor issues. Most misfiring problems can be repaired quickly and inexpensively.
Broken or Loose Gas CapYour best case scenario is if you simply forgot to tighten the gas cap after filling up. A loose, ill-fitting or broken gas cap can result in fuel evaporating out of the filler hose, which will be detected by vehicle sensors, thus triggering the check engine light.
When the check engine light comes on don't hesitate to get to the shop for service. For accurate check engine light diagnostics in Gonzales, LA, head to All Tune and Lube. Our auto repair techs will make sure that your vehicle is operating as best it can using the latest diagnostic and service technology. To learn more or to request expert auto repair in Gonzales call (225) 590-5369 to make an appointment.
All Tune & Lube Gonzales Blog
Written & Published By MORBiZ
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