The O2 sensor in your vehicle monitors the exhaust gases coming out of the engine. It determines the amount of oxygen in the gases, which indicates how well the fuel is being burned. The O2 sensor then sends in
Intake Manifold Absolute Pressure (MAP) sensor Engine speed (RPM) Mass Air Flow (MAF) sensor Get your scan tool Now, let's see how you can use live data to diagnose and troubleshoot your car: Short/long term fuel trim Fuel trim is key to detecting whether your car is running...
Unplug the electrical leads running to the O2 sensor. Step 5 Remove the O2 sensor by placing the O2 sensor removal tool over the end of the sensor and turning the sensor and removal tool counterclockwise with a socket wrench.
If it’s a minor issue such as a glitch in the mass airflow or O2 sensor, it may fix automatically, and the light will go dark. However, if it still stares at you after three days, you have to apply the methods mentioned above to reset it. You can wait for the light to go off...
Then, depending on the trouble code, the sensor signal must be tested with a scan tool. For example, see this chart of the air-fuel ratio sensor signal on a scan tool: when the engine is revved, the signal jumps to "rich", then as the RPM drops and the fuel is cut off, the sen...
Use the O2 sensor tool and socket wrench to screw in the O2 sensor onto the end of the truck exhaust system. It will thread onto the system like a bolt on turning and will get tightened on turning clockwise. Plug the car’s electrical connectors in the O2 sensors then. Step 4 – ...
O2 sensors "breathe" through their wire connectors and have no vent hole. It is hard to believe, but the tiny amount of space between the insulation and wire provides enough room for air to seep into the sensor (for this reason, grease should never be used on O2 sensor connectors because...
Testing O2 sensors on the workbench. Use a high impedence DC voltmeter as above. Clamp the sensor in a vice, or use a plier or vice-grip to hold it. Clamp your negative voltmeter lead to the case, and the positive to the output wire. Use a propane torch set to high and the inner...
o2 sensor can pull in extra oxygen and mimic a vacuum leak even if it's not large enough to make any noise. while the smoke isn’t exactly pleasant, is much safer and less tear-inducing than carb cleaner. smoking out leaks it's a pro-grade tool, but a smoke generator makes ...
sensordiary.com is a website dedicated to providing valuable information about sensors and how to fix common sensor faults.