Maximize Engine Performance Essential Tips for Changing O2 Sensors

The primary o2 sensor is used to monitor air/fuel ratio and the ECU adjust to have the engine runs optimally. The secondary o2 sensor is there to just monitor ... Step 1: Buy a 7/8" O2 sensor socket Step 2: Unplug sensors Step 3: Remove sensors Step 4: Install new sensors Step 5: Plug new sensors in Step 6: They can be a huge pita if they are really stuck. The o2 sockets are great for installing them but not always so great for getting them out. Is a mystery Check Engine light driving you nuts? It could be a funky Oxygen (O2) sensor. Associate auto editor Ben Wojdyla puts his trusty ... It is recommended that the O2 sensors be replaced every 90,000 miles. Denso 234-4168 Oxygen Sensor - Downstream Front Easy access in the front, just below the cat. I think, if I recall correctly, this is the one that requires ... I've been googling around but can't seem to find any information on replacing the o2 sensors beyond the diagrams offered by Volvo: The mechanic called me and said that it's standard to replace the front (upstream) O2 sensor when replacing the converter. How to Replace an Oxygen Sensor · 1. Locate the oxygen sensor · 2. Remove the old oxygen sensor · 3. Install the new oxygen sensor · 4. Reconnect the wiring · 5 ... This is the sensor behind the catalytic converter. I recommend replacing it when the RAV has sat for more than 8 hours. Some prefer to remove ...