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Re: P0171 & P0174 possibly intermittent
Posted to Technical Discussion Forum on 2/24/2009 2 Replies

Hi Mike,

As you can see by the FF numbers, the FF was captured at some point in time after the code set. The fuel trim numbers aren't high enough to set a lean code. So, what data in the FF can you use to help your diag?

To me, the critical data we see in ... Login to read more.

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