Vibration After Lift Kit Installation Caused by Tapered Rear Blocks
- 7 years ago
The Oxygen sensor has a reactive Zirconia and Platinum element that senses Oxygen in the exhaust. Here are the facts about Oxygen sensors.
1) The O2 sensor value is used by the ECM in maintaining the Stoichiometric air/fuel ratio of 14.7:1.
2) The O2 sensor generates its own voltage.
3) The O2 sensor needs to cross the 450 milli Volts or 0.45 volts when it cycles, assuming the mixture is at 14.7 to 1.
4) O2 sensors need to cycle between 0.1 and 0.9 volts for the mixture to be considered at Stoichiometry. This value is considered perfect, so some deviation is posible.
5) If the O2 sensor is working properly, the Fuel-Trims should be at between -10% and +10%, and in Closed-Loop.
6) If there's an ignition misfire, and unburnt fuel exits the exhaust, the O2 sensor will see the Oxygen only, not the raw fuel, thereby, signaling the ECM that the mixture is LEAN or the opposite.
7) The O2 sensor doesn't measure Oxygen directly, by measures the difference between exhaust and outside air Oxygen content.
8) Silicone is the biggest enemy of the O2 sensor. So, do not use silicone paste on the intake manifold.
9) The O2 sensor signal is also needed by most catalytic converter to reduce harmful emissions.
10) To test the O2 sensor, use a volt-meter or better yet, a graphing volt-meter. Measure between sensor ground and O2 sensor signal wire. Regardless of whether the engine is running properly or not, snap the throttle, the O2 signal should reach at least 0.8 to 0.2 volts.
Remember, if the engine is running fine, the Fuel-Trims should be between -10% and +10%, the O2 signal should cycle once every second and cross the 450 mV value, and finally, reach between 0.8 and 0.2 volts.
1) The O2 sensor value is used by the ECM in maintaining the Stoichiometric air/fuel ratio of 14.7:1.
2) The O2 sensor generates its own voltage.
3) The O2 sensor needs to cross the 450 milli Volts or 0.45 volts when it cycles, assuming the mixture is at 14.7 to 1.
4) O2 sensors need to cycle between 0.1 and 0.9 volts for the mixture to be considered at Stoichiometry. This value is considered perfect, so some deviation is posible.
5) If the O2 sensor is working properly, the Fuel-Trims should be at between -10% and +10%, and in Closed-Loop.
6) If there's an ignition misfire, and unburnt fuel exits the exhaust, the O2 sensor will see the Oxygen only, not the raw fuel, thereby, signaling the ECM that the mixture is LEAN or the opposite.
7) The O2 sensor doesn't measure Oxygen directly, by measures the difference between exhaust and outside air Oxygen content.
8) Silicone is the biggest enemy of the O2 sensor. So, do not use silicone paste on the intake manifold.
9) The O2 sensor signal is also needed by most catalytic converter to reduce harmful emissions.
10) To test the O2 sensor, use a volt-meter or better yet, a graphing volt-meter. Measure between sensor ground and O2 sensor signal wire. Regardless of whether the engine is running properly or not, snap the throttle, the O2 signal should reach at least 0.8 to 0.2 volts.
Remember, if the engine is running fine, the Fuel-Trims should be between -10% and +10%, the O2 signal should cycle once every second and cross the 450 mV value, and finally, reach between 0.8 and 0.2 volts.