OutdoorWire News

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California OHV recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and news and information Read More
TrailTalk 
Forums

TrailTalk Forums

4x4Wire TrailTalk Forums for 4x4 tech information Read More
  • 1

Recreation Advocate

The OutdoorWire family websites feature news and information affecting outdoor recreation opportunities and access to public lands. 

Time to Replace the O2 Sensor on your 3rd Gen Toyota?

If you are not familiar with the OBDII (On Board Diagnostic generation II) systems used on 3rd generation and later Toyotas, you might want to read this reference before proceeding further in this article. As described in the reference article, the oxygen sensor in the exhaust system is the key "feedback" sensor for correcting and maintaining the proper fuel mixture. It measures the post-combustion gases to determine the actual air/fuel mixture of the prior combustion cycle and then, the ECU adjusts the fuel trim percentage on the next combustion cycle, to keep the fuel mixture at the optimum value.

As the oxygen sensor ages, its responsiveness begins to slow down. Since I have a BR-3 OBD-II scanner that can read the voltages generated by the O2 sensor, I thought I would be able to see some indication in the voltage signal that my O2 sensor was not providing optimum performance. However when I examined the O2 Sensor Output with the engine idling, it appeared to be pretty much the same as I had seen when the vehicle was new. Also, the error codes applicable to the O2 Sensor had not shown up and turned on the Check Engine light.

However, if the Check Engine Light were to turn on with one of the following O2 Sensor codes stored, you should follow the diagnostic procedure and replace the O2 sensor if so indicated in the diagnostic procedure.

Read more of Tech: Time to Replace the O2 Sensor on your 3rd Gen Toyota? in the 4x4Wire.com Archives.

ARRA Washington Newsletter - December 2010
New Web Pages Present BLM's Response to Climate Ch...
 

Comments

No comments made yet. Be the first to submit a comment
Already Registered? Login Here
Guest
Saturday, 10 December 2016
If you'd like to register, please fill in the username, password and name fields.

Captcha Image

OutdoorWire Websites

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California OHV recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and news and information Read More
TrailTalk 
Forums

TrailTalk Forums

4x4Wire TrailTalk Forums for 4x4 tech information Read More
  • 1

4x4Wire Tech Section

Jeep 4x4 Tech

Jeep 4x4 Tech

Jeep Tech from JeepWire Read More
Toyota 4x4 Tech

Toyota 4x4 Tech

Toyota Tech from 4x4Wire Read More
Mitsubishi 4x4 Tech

Mitsubishi 4x4 Tech

Mitsubishi Tech from 4x4Wire Read More
Isuzu 4x4 Tech

Isuzu 4x4 Tech

Isuzu Tech from 4x4Wire Read More
  • 1