How many oxygen sensors does a 2002 Toyota 4Runner have?
Only 2 sensors, one before and one after the cat. Both are the same part #. They have 18 and need to be replaced every 6 months… The 4th Gen V8 has 4 sensors, 2 before and 2 after.
How do you change a O2 sensor on a Toyota 4Runner?
Changing out your O2 sensors on your 4Runner is a pretty straightforward process that isn’t too difficult to handle….
- Step 1 – Lift your truck.
- Step 2 – Locate your O2 sensors.
- Step 3 – Remove and replace front O2 sensor.
- Step 4 – Remove and replace the rear O2 sensor.
How many O2 sensors does a Toyota 4runner have?
Oxygen sensors are located before and after the catalytic converter. A vehicle may have two to five oxygen sensors, and sometimes even more.
How many O2 sensors does a 97 Toyota 4runner have?
There are 2 O2 sensors. Do yourself a favor and get Denso only.
How do you replace an O2 sensor in a Toyota 4Runner?
An extractor socket pounded on with a hammer or a pair of vise grip pliers squeezed against the nut to break it loose enough to un-thread it by hand is usually all it takes. Follow the oxygen sensor wire to the plug connection. It’ll be about 7 inches away from the sensor.
How to check and replace an oxygen sensor ( air )?
A P1155 or P1135 code indicates you have a bad sensor. This is common in Toyota and Lexus cars and trucks. Learn how to test the air fuel ratio sensor to see if it is bad, and then learn how to replace the bad sensor. Nice O2 Sensor Socket Kit: http://www.amazon.com/gp/product/B005…
Where is the catalytic converter on a Toyota 4Runner?
Use the approved jacking points and jack stand locations for safety. From the passenger side door, crawl under your truck and locate your exhaust pipe. In between the front and rear section of this pipe, you should see your catalytic converter.
Can a bad O2 sensor cause a cel?
If you are getting a CEL for a bad O2 sensor, the trouble could actually be from the MAF sensor. If you have tried cleaning it up but still get the error code, it’s time to change your O2 sensor.