May 9, 200520 yr I have a 95 legacy that I have been slowly learning to maintain. I want to change the 02 sensors because I bought the car at 107K and I now have 155K on it. I think that there are 2 sensors in the legacy. Which one, should I change, or should I just do both? Thanx, Pete
May 9, 200520 yr I have a 95 legacy that I have been slowly learning to maintain. I want to change the 02 sensors because I bought the car at 107K and I now have 155K on it. I think that there are 2 sensors in the legacy. Which one, should I change, or should I just do both? Thanx, Pete You could do both, but if you just do one, do the front one first. The front one is used for fuel trim, and the second one is a check on the first.
May 9, 200520 yr Author You could do both, but if you just do one, do the front one first. The front one is used for fuel trim, and the second one is a check on the first. By front, you mean the one that is closest to the engine, right? Thanx.
May 9, 200520 yr By front, you mean the one that is closest to the engine, right? Thanx. Yeah, front is closer to the engine. . .
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