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Wow, that is a very broad question! Sometimes I wish I could connect my laptop to my truck and it tell me exactly what to replace--dream on, right?

I just replaced the O2 sensor on my 1991 Nissan truck. I changed it for several reasons:

irratic idle (sometimes very fast, rough, or very low)

outrages gas consumption!! I can literally watch the needle lay down... :( , remember, this truck has a four banger...I say can because AFTER I changed it, gas use is still unchanged (this broke my heart). I used a 1 meter cheater bar on it to loosen it, then the base and 02 sensor came out together with the threads looking like butter on both..02 nightmare!

surging on take off (the truck bucked a little once the light turned green)

engine light comes on (this is one of many reasons why that bothersome little red eye winks at you)

Good luck, whomever posted this question..I hope this at least gets you started.

Durango down south...

Wow, that is a very broad question! Sometimes I wish I could connect my laptop to my truck and it tell me exactly what to replace--dream on, right?

I just replaced the O2 sensor on my 1991 Nissan truck. I changed it for several reasons:

irratic idle (sometimes very fast, rough, or very low)

outrages gas consumption!! I can literally watch the needle lay down... :( , remember, this truck has a four banger...I say can because AFTER I changed it, gas use is still unchanged (this broke my heart). I used a 1 meter cheater bar on it to loosen it, then the base and 02 sensor came out together with the threads looking like butter on both..02 nightmare!

surging on take off (the truck bucked a little once the light turned green)

engine light comes on (this is one of many reasons why that bothersome little red eye winks at you)

Good luck, whomever posted this question..I hope this at least gets you started.

Durango down south...

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Q: How do you know when you need an oxygen sensor?
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