What are these?

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mudslug88
Driver/Navigator
Posts: 29
Joined: Fri Dec 19, 2014 6:22 pm

What are these?

Postby mudslug88 » Thu Dec 14, 2017 7:12 pm

Gidday,
In the process of ripping out the exhaust on my 94 Terrano and I found these. One of them has to be an o2 sensor?? (big one?) But what about the other one?? (small one?)
It is a vg30e motor and manual.
Cheers.
Josh.
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BlakeNZ
Hard Yaka
Posts: 710
Joined: Sun Jun 16, 2013 10:50 am
Location: manawatu

Re: What are these?

Postby BlakeNZ » Thu Dec 14, 2017 9:45 pm

small one is a cat "overheat" sensor.

sirLachlan
Hard Yaka
Posts: 109
Joined: Sun Apr 03, 2016 8:28 am

Re: What are these?

Postby sirLachlan » Sun Dec 17, 2017 5:38 am

The small one does nothing other than turn on the cat temp light on the dash .
The big one is for closed loop fuel trim at idle /cruise . Saves you gas

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