We talked about the signs of a bad mass airflow sensor a couple of blog posts back; now, let’s talk about the oxygen sensor. LP & Sons Auto Care explains that the oxygen sensor is responsible for measuring the amount of oxygen that is found in your car, truck, utility vehicle, or van’s exhaust. If it malfunctions, you can end up with an imbalance in the air and fuel in your automobile’s engine and you will notice the following signs as a result.
Black Exhaust Smoke
When there is too much fuel in your engine, it is left with no alternative other than to burn the excess fuel away. As a consequence, your vehicle might start to release black exhaust smoke through the tailpipes. If the engine is flooded with fuel, you might also see flames or sparks.
Check Engine Light
One of the primary reasons why the engine control module turns on the check engine light is to warn you that the oxygen sensor is malfunctioning. In most cases, replacing the oxygen sensor is the only way to get the check engine light to turn off again.
Emissions Test Failure
Because of the imbalance of air and fuel in your automobile, your vehicle may fail the emissions test. If the oxygen sensor is malfunctioning, it is sending incorrect data to the engine control module. Consequently, the module will keep the air and fuel mixture off and your emissions will get too high.
Engine Performance Issues
You may also notice engine performance issues depending on whether there is more air or fuel in the engine. An engine that is rich with air will sputter and struggle to run. It might even stall. An engine that has too much gas in it will surge forward even though your foot pressure on the accelerator remains the same.
Fuel Economy Loss
Because your engine is burning more gasoline than normal, you might notice a huge reduction in your fuel economy. If you find yourself heading to the service station more often, it’s a good idea to have your vehicle inspected to see why you have a sudden loss in gas mileage.
Rotten Egg Smell
Finally, a malfunctioning oxygen sensor can overload the catalytic converter and it will die suddenly. If you notice a rotten egg smell coming out of your engine, you have a problem with the catalytic converter. This needs to be addressed immediately.
LP & Sons Auto Care is the best service shop in DeLand, FL, and we’d be happy to test your oxygen sensor if you notice any of the signs above. Call us today to schedule an appointment.