Installing the upstream O2 sensor on our '05
#1
Installing the upstream O2 sensor on our '05
We're in the process of installing an upstream O2 sensor in the header on our race car. The OEM harness seems to be in place throughout the engine comparment and I'm trying to confirm the location of the plug for the sensor. The sensor is approximately 17.5" long so it comes off the OEM exhaust manifold and comes up to the engine.
Can anyone describe the location or better yet, shoot a photo and post it so I'm sure we're hooking it into the correct plug?
Thank you in advance,
Eric
Can anyone describe the location or better yet, shoot a photo and post it so I'm sure we're hooking it into the correct plug?
Thank you in advance,
Eric
#2
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Please review the link below and refrain from posting this type of thread in the DIY Forum area ...
https://www.rx8club.com/series-i-do-yourself-forum-73/new-sheriff-diy-town-228395/
thank you.
https://www.rx8club.com/series-i-do-yourself-forum-73/new-sheriff-diy-town-228395/
thank you.
#4
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iTrader: (2)
Delete you other thread as well.
Post in the Troubleshooting section.
The front O2 sensor can be a bitch to reach.
Sorry I don't have a picture of it.
Its attached the header manifold and you need a special wrench to remove it ... that is if you don't want to take everything apart around it
Post in the Troubleshooting section.
The front O2 sensor can be a bitch to reach.
Sorry I don't have a picture of it.
Its attached the header manifold and you need a special wrench to remove it ... that is if you don't want to take everything apart around it
#5
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It's on top of the OEM exhaust manifold, at the 'back' end of it just in front of the flange where the cat/midpipe bolts to.
Assuming you have an aftermarket header, the position could change, but the OEM harness would have the length needed to get to that point.
Assuming you have an aftermarket header, the position could change, but the OEM harness would have the length needed to get to that point.
![](http://www.jimellismazdaparts.com/images/parts/mazda/fullsize/2F04501.jpg)
#9
You guys are great, thank you. We have a header on the race car so the O2 sensor is down on the collector. I was trying to confirm the location of the plug on the harness and you guys have comfirmed that it's on the back of the engine just above the transmission housing. I found the four wire plug and just wanted to make sure we were good to go.
Thanks again for all the help!
Thanks again for all the help!
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