Why is my Check Engine light after air filter replacement?
My guess is the O2 sensors are ok, but their readings are confusing the ECM b/c the new filter has changed the airflow characteristics to the MAF. Suggest to replace things as they were, buy a new air filter of the same type as the original if necessary.
Is the Check Engine light still on after replacing the battery?
Check engine light on after replacing the battery. New battery installed and the check engine light is on and will not go out. Attempted disconnecting the battery again. Still on. Would like to not have to take it to the dealer if possible. Any suggestions. Goto local parts store and have them run an OBD 2 scan…
What should I do after replacing my air filter?
Some recommend cleaning the air flow sensor, which could be covered with oil. I didn’t find any evidence of oil but decided to clean it with a spray for this purpose anyways. I’ve also replaced the filter with a conventional air filter.
When does the battery warning light come on?
This warning light illuminates whenever the charging system isn’t charging the battery with at least a voltage of around 13.5 volts. This particular warning can be triggered by a range of issues, so check with a professional to find out what the exact issue is before spending money on parts that don’t necessarily need replacing.
What to do with a check engine light after replacing an air filter?
After a little searching on Google, I discovered that several other folks had experienced issues with the check engine light after installing a K&N filter. Some recommend cleaning the air flow sensor, which could be covered with oil. I didn’t find any evidence of oil but decided to clean it with a spray for this purpose anyways.
What are the signs of a dirty air filter?
You’ll notice the engine does not start up easily, misfires, or jerks roughly as a result. 3. Unusual Engine Sounds. In normal circumstances, when your car is stationary with the engine turned on, you should sense the smooth rotation of the engine in the form of subtle vibrations.
What happens when you replace the air filter in your car?
Reduced Horsepower. If your car does not respond adequately or if you notice jerking movements when you press the accelerator, this could indicate that your engine is not receiving all the air it needs to perform. Since it improves airflow, replacing your air filter can improve acceleration or horsepower by up to 11%. 7.
Why does my car have a check engine light?
Many modern engines suck up about 10,000 gallons of air for every single gallon of fuel burned in the combustion cycle. The inadequate air supply can result in carbon deposits — the byproduct of combustion — accumulating in the engine and setting off the Check Engine Light.
Why is the Check Engine light on on my Jeep?
You’re driving along when you notice that orange, engine-shaped icon lights up on your instrument cluster. Once you determine it’s your Jeep check engine light, you might feel alarmed. Or maybe you already know that’s what it is.
How does the MAF work on a Jeep Cherokee?
The MAF detects the volume of air as it enters your engine. It does this by heating up a thin wire or resistor. Your Jeep’s computer then measures the electrical resistance through the MAF, while air flowing through the sensor cools its components down.
Can a restricted air filter cause engine problems?
It keeps the undesirables (dirt and debris) out while letting power-producing air in. A restricted air filter can cause many problems, including an illuminated check engine light. Engine airflow performance. Besides keeping contaminants out, an air filter must allow unrestricted airflow into the engine.
My guess is the O2 sensors are ok, but their readings are confusing the ECM b/c the new filter has changed the airflow characteristics to the MAF. Suggest to replace things as they were, buy a new air filter of the same type as the original if necessary.
You’re driving along when you notice that orange, engine-shaped icon lights up on your instrument cluster. Once you determine it’s your Jeep check engine light, you might feel alarmed. Or maybe you already know that’s what it is.
The MAF detects the volume of air as it enters your engine. It does this by heating up a thin wire or resistor. Your Jeep’s computer then measures the electrical resistance through the MAF, while air flowing through the sensor cools its components down.
It keeps the undesirables (dirt and debris) out while letting power-producing air in. A restricted air filter can cause many problems, including an illuminated check engine light. Engine airflow performance. Besides keeping contaminants out, an air filter must allow unrestricted airflow into the engine.
What should I do if my check engine light comes back?
Many codes don’t just clear that the specific moment something is fixed. The computer waits a certain number of drive cycles without seeing anomaly. So clear the codes and see if they come back. If they do, then report the specific codes. And like circuitsmith said, you won’t get anything out of a K&N so you might as well just go back to stock.
Can a failed air filter cause an O2 sensor to not work?
The excess filter oil will not make it through to the O2 sensors. There can’t be enough on the filter to load up the O2 sensors. Is it a failed O2 sensor or a failed HEATER for the O2 sensor?
How often should you change the air filter on a Mercedes C300?
The engine air filter in your 2009 Mercedes-Benz C300 cleans the air that enters your engine. You should change the filter on your C300 at least once a year or every 20,000 miles, whichever comes first.
Where are the air filters in a Mercedes Benz?
The air filters for the engine are housed in the engine cover. The engine cover is in two pieces. Grasp the front piece, and pull up on it firmly to unsnap it from the clips that hold it on. Next, remove the two air duct hoses and the hose for the air injector from the rear piece of the engine cover.