4age exhaust sensor - needed?

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4age exhaust sensor - needed?

Postby dxtawagon » Tue Apr 19, 2005 11:12 am

my rwd 4age has extractors but with no exhaust sensor, i have a factory rwd exhaust and secondaries with the sensor that i could use instead and plug in.
would this make the car run abit smoother and more efficient??

i heard that extractors arnt much if at all better for performance than the factory exhaust manifold?? this true?
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Postby Ebola_One » Tue Apr 19, 2005 1:26 pm

The "exhaust sensor" is actually an Oxygen sensor. (o2)
Having one in will give you better milage, especially if you're doing a lot of motorway driving (or steady driving)
Removing it will run the car in open loop (which it runs at when you're at full throttle)

if you have somewhere to put it (on the new extractors) then you may aswell use it, other wise if there's no where for it sell it & put the extra money towards petrol.
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Postby CozmoNz » Tue Apr 19, 2005 1:27 pm

having a peak down the extractors of my blacktop ages ago, i noticed theres not one bolted there.... is it underneath the car where they become 2-1?

or do blacktop not have them?
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Postby Ebola_One » Tue Apr 19, 2005 1:40 pm

CozmoNz wrote:having a peak down the extractors of my blacktop ages ago, i noticed theres not one bolted there.... is it underneath the car where they become 2-1?

or do blacktop not have them?

If you look down the front of the engine, from memory (and if its the same as a silvertop) you'll find it's actually closer to the front of the engine, maybe in the primaries around the oil filter.

Just incase you don't know what an O2 sensor looks like, it'll be cylindrical, it'll have between 1 & 4 wires (on a blacktop I'd expect 3-4 wires) about the size of a roll of 5c peices or half a "tube" of winegums, the wires will come out the top of the sensor and it'll probably have a 22-23mm nut on the sensor itself.
I think that the older 4age's have a plate that bolts to the exhaust that holds/sandwhiches the o2 sensor in.

Difference between the 1 wire & 3-4 wire sensors are that the 1 wires are unheated & take a few minutes to start working correctly. The 3-4 wire ones have a heater element & work straight away. (better economy)
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Postby aesc » Tue Apr 19, 2005 1:50 pm

CozmoNz wrote:having a peak down the extractors of my blacktop ages ago, i noticed theres not one bolted there.... is it underneath the car where they become 2-1?

or do blacktop not have them?


Might be in the same place as my GTZ, which is after the 2-1 part just after the front cross member
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Postby CozmoNz » Tue Apr 19, 2005 2:01 pm

Ebola_One wrote:
CozmoNz wrote:having a peak down the extractors of my blacktop ages ago, i noticed theres not one bolted there.... is it underneath the car where they become 2-1?

or do blacktop not have them?

If you look down the front of the engine, from memory (and if its the same as a silvertop) you'll find it's actually closer to the front of the engine, maybe in the primaries around the oil filter.

Just incase you don't know what an O2 sensor looks like, it'll be cylindrical, it'll have between 1 & 4 wires (on a blacktop I'd expect 3-4 wires) about the size of a roll of 5c peices or half a "tube" of winegums, the wires will come out the top of the sensor and it'll probably have a 22-23mm nut on the sensor itself.
I think that the older 4age's have a plate that bolts to the exhaust that holds/sandwhiches the o2 sensor in.

Difference between the 1 wire & 3-4 wire sensors are that the 1 wires are unheated & take a few minutes to start working correctly. The 3-4 wire ones have a heater element & work straight away. (better economy)


tehe, thanks for the description, but i know what they are.

just wonderin, since i did have a poke down there and couldnt see one, so im assuming its underneath. :D.

now.. to find a very cheap wideband o2 sensor :D
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