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Re: Poisoned A/F ratio sensor
Posted to Technical Tips Forum on 3/13/2019 7 Replies

I have had to replace the forward sensor like the posting mentions several times for exactly the same drivability concerns. Usually sets a 171 code too.

I've looked at them several times, and do not think it comes from the valve cover. I think it comes from... Login to read more.

7 Replies Received (View Replies)