Air/Fuel & O2 sensor mini write-up - Page 2 - Toyota FJ Cruiser Forum
Maintenance Tech This forum is for discussion of all aspects of maintenance that should be performed on the FJ Cruiser to keep it operating at maximum efficiency.

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post #11 of 14 (permalink) Old 07-18-2018, 09:00 PM
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Re: Air/Fuel & O2 sensor mini write-up

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bkd previously said: View Post
do you think that your O2 sensors and MAF issues have anything to do with the latest on the DUSTGATE being discussed for other Toyotas (especially the 1GD-FTV). I'm being told by the mechanic that I need to replace the O2 sensors (but I've only done 88000). It keeps throwing the codes after starting a couple of times after the reset! Any suggestions?
A little more clarity would be helpful:
1. What year model is your FJ?
2. What are the specific OBD-II codes that are being logged?
3. 88,000 miles, or kilometers?

(There are actually four sensors in the exhaust system, two air-fuel and two oxygen.)
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Last edited by FJtest; 07-19-2018 at 11:50 AM.
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post #12 of 14 (permalink) Old 09-06-2018, 12:37 PM
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Thanks for the info. I am about to replace all of my sensors.
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post #13 of 14 (permalink) Old 07-24-2019, 03:11 PM
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Re: Air/Fuel & O2 sensor mini write-up

This is a great write up. I have a '07 TRD standard transmission and the exhaust is getting soft so I am replacing with stainless/performance exhaust and wondered if you had any experience with O2 Sensors for "higher-end" exhaust systems? Does it matter enough to not use the OEM spec sensors? Any suggestions would be greatly appreciated.

From an FJ60 to an FJ Cruiser...
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post #14 of 14 (permalink) Old 07-25-2019, 12:37 PM Thread Starter
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Re: Air/Fuel & O2 sensor mini write-up

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LSENEM previously said: View Post
This is a great write up. I have a '07 TRD standard transmission and the exhaust is getting soft so I am replacing with stainless/performance exhaust and wondered if you had any experience with O2 Sensors for "higher-end" exhaust systems? Does it matter enough to not use the OEM spec sensors? Any suggestions would be greatly appreciated.
I have only ever used the OEM exhaust and so far with 11 years and 210K+ miles its working just fine. Same with the sensors, OEM used Denso and thats what I replaced them with and everything seems to be working great. I think the supercharger guys might be doing some 'higher end' stuff but I dont really know. Underdog Racing would be the place to check out for the super charger stuff.
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