Can a bad O2 sensor cause a burning smell?
If the oxygen sensor is going bad, the fuel-delivery and fuel-combustion systems will be thrown off. This excess fuel in the engine can produce a sulfuric, rotten egg smell, and may even produce black smoke from the exhaust.
Why is the O2 sensor on my Chevy Malibu bad?
By using a OBDII scanner you can determine exactly which sensor is bad, and what is wrong with it. Your Malibu’s oxygen sensors are responsible for helping to keep your engine running at optimal efficiency. The engine management computer uses the data from all of the O2 sensors to keep the air/fuel mixture optimized.
Where is the O2 sensor on a Chevy?
Downstream sensors Bank 1 Sensor 2 and Bank 2 Sensor 2 can be accessed from under the vehicle. Do not touch the sensor or the heat shield until the engine cools down. Disconnect the O2 sensor. Press the connector and pull it away to unplug the oxygen sensor.
Where is the O2 sensor in the exhaust manifold?
Fig. 2: Location No. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 4: Location No. 3 — Exhaust collector (where more than 1 pipe joins together)
Why does the Check Engine light come on on a Chevy Malibu?
Oxygen sensors can change the way that your Malibu’s engine runs. Most of the time, the check engine light will come on. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test.
What happens when the oxygen sensor goes bad on a Chevy Malibu?
Your Malibu can exhibit symptoms when the Oxygen sensor has gone bad. Or, it may exhibit none at all. Often enough, the only sign of the problem at all is the service engine soon light being on. The good news is, if you end up discovering that the oxygen sensor is bad, they really aren’t that expensive to replace.
What happens if you have a bad O2 sensor?
If the fuel mixture has too much oxygen, the engine is burning lean. If the fuel mixture has too little oxygen, the engine is burning rich. In either case, the ECU needs this information in order to adjust the fuel/oxygen ratio. If your car has a defective o2 sensor, it will not run efficiently.
Oxygen sensors can change the way that your Malibu’s engine runs. Most of the time, the check engine light will come on. It’s a good thing that the check engine light would come on, as there is more than one oxygen sensor, and they can be difficult to get to and test.
Where is the oxygen sensor located on a car?
This information is used by the Powertrain Control Module (PCM) to determine the correct air to fuel ratio for your engine in real time. The sensor is located in the exhaust system and allows the fuel injection and engine timing to work efficiently, which assists with emissions control.