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Success In Changing Both Pre-cat O2 Sensors


cliffordA

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I know this is a minor repair, but can you believe the dealership wanted over $700 to change both my pre-cat O2 sensors after the Malfunction Indicator Lamp (MIL) / Check engine Light went on?

Time spent was well worth the $500 saved.

Finished doing a write-up on it:

http://monkeeworks.com/go_O2

o2LeftPos.lt.0.jpg

Thanks,

Clifford Vincent Arrow

monkeeworks.com

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  • 4 weeks later...
I know this is a minor repair, but can you believe the dealership wanted over $700 to change both my pre-cat O2 sensors after the Malfunction Indicator Lamp (MIL) / Check engine Light went on?

Time spent was well worth the $500 saved.

Finished doing a write-up on it:

http://monkeeworks.com/go_O2

o2LeftPos.lt.0.jpg

Thanks,

Clifford Vincent Arrow

monkeeworks.com

Just wanted to send a big Thank You to Clifford Vincent Arrow for the nice photos and directions he gave for replacing the CO2 sensors in my LX470. The job went just as he discribed and took me only about 2 hours. biggest problem I had was in taking the rock panal off as a couple of the bolts broke off and I was forced to drill them out and re-tap the holes for replacements.

I did have a question however about reseting the engine codes to get the light to go off. Do I need to do that or will the light go off on it's own after awhile now that the sensors have been replaced? I have been cautioned that erasing the code will cause me a problem next time I go to the Illinois Emission Check Station. Canoe3

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Thanks for the kind remarks, Canoe3. I have posted your most excellent improvisation of disconnecting battery to clear MIL when not in possession of an OBD2 scanner/reader in the Readers' Comments Section http://www.monkeeworks.com/projects/auto/L...QandA/index.php.

Clifford Vincent Arrow

http://monkeeworks.com

Just wanted to send a big Thank You to Clifford Vincent Arrow for the nice photos and directions he gave for replacing the CO2 sensors in my LX470. The job went just as he discribed and took me only about 2 hours. biggest problem I had was in taking the rock panal off as a couple of the bolts broke off and I was forced to drill them out and re-tap the holes for replacements.

I did have a question however about reseting the engine codes to get the light to go off. Do I need to do that or will the light go off on it's own after awhile now that the sensors have been replaced? I have been cautioned that erasing the code will cause me a problem next time I go to the Illinois Emission Check Station. Canoe3

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