Replacing an 02 sensor [Archive] - GrandAmGT.com Forum

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PontiacGT
02-27-2005, 08:24 PM
alright, my check engine light is on, and my mechanic told me it's an 02 sensor on the exhaust side, and said something like $120 for the part. I was like, wtf. How can a stupid sensor be worth that much. Anyhow, is there any way that I could replace this myself, at home I mean. It's like a plug thing like the MAF sensor or what? How many sensors do the 3100 '97 GT's have past the engine? Any help would be great.