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Re: How many wire does the O2 have? 1, 2, 3, 4???
Posted to Emissions Forum on 1/18/1998 3 Replies

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Hi Nhan,

Interesting that you have never seen a two wire O2 sensor....they were all the rage in 1981 on GM vehicles with feed back carbs! Doubt the dealers even stock them any more. 1 signal and 1 g... Login to read more.

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