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Discussion Starter #1
I started out with the P1155 code (front O2 sensor) replaced that, and got P0174.
To the best of my research, this is "mixture too lean".
I cleaned the MAF. When that did not work, I replaced it.
Still getting the code.
What else should I try? The online reports on this one are rather vague, with a bunch of different options. Which ones should I try _first_? Which ones would a moderately handy fellow be able to do himself, and when do I give up and take it in to the shop?

Thank you in advance for all assistance.
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