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Just Changed O2 Sensor

webng

By webng,
in General Maintenance

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webng Experienced

webng

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I changed the O2 sensor on Sat and so far haven't noticed any change in fuel consumption from the first 1/4 tank. Do i need to reset the ecu? I disconnect the negative terminal and stomp on the brake pedal a few times right?

Is there anyway of checking the O2 sensor to see if it's connected alright? My crimping skills aren't very flash :glare:

Car is a S2 Stagea, RB25DET NEO.

Thanks!

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jrocket Proficient

jrocket

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Posted

I just did the same thing too mate. I reset the ecu as u mentioned above and i feel that it did make a slight amount of difference. Haven't driven the car enough since to really tell about the fuel econ. If you want to see that the sensor is working you can cut some of that black tube cover away just after the plug where the sensor plugs in. If you have a look there you will see the plastic insulated wires there. If you have a sharp knife you can shave some of the insulation away to see the signal wire. I did this and hooked my multimeter up to it to read the values. An analogue meter might be better to use for this testing.

webng Experienced

webng

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I read somewhere on the forums that sometimes the engines needs a week of driving to "learn" before you see any affects of the new O2 sensor so i will keep an eye on it.

I don't have a multimeter so it might be something the mechanic does when i take it in for a tune in a couple of weeks. I'll try resetting the ecu though.

Cheers.

I just did the same thing too mate. I reset the ecu as u mentioned above and i feel that it did make a slight amount of difference. Haven't driven the car enough since to really tell about the fuel econ. If you want to see that the sensor is working you can cut some of that black tube cover away just after the plug where the sensor plugs in. If you have a look there you will see the plastic insulated wires there. If you have a sharp knife you can shave some of the insulation away to see the signal wire. I did this and hooked my multimeter up to it to read the values. An analogue meter might be better to use for this testing.
webng Experienced

webng

Posted
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Posted
hey webng just wonderin were u got and how much the new o2 censor was

Got the NGK/NTK OZA395-E2 from Petroject in Stepney, Adelaide for $78. Unfortunately the plug didn't match so I had to cut and crimp the old plug to the new sensor. Didn't take too long but I would highly recommend getting a sensor socket, a lot easier i'd imagine!

Apparently the original Nissna part cost double that. I was quoted about $160 for a workshop to do it.

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