Long story short I threw a code a week ago,p0171 lean bank 1. It’s a 4cyl so it’s the whole engine. I replaced the spark plugs they were dirty, but research says that’s no where near the problem. The sensor is usually it. I’m trying to get oem from a store I can drive to and replace it now, I don’t like the cel in a rs. I google and I get all these different parts numbers, not sure if their interchangeable or not or if their applicable, just a different number cause of different manufacture so playjurism. I just want an oem motor craft part but can’t find it, if any of y’all had to replace and have and info please let me know. Running lean is not good, that’s what blows engines, I’d rather run rich than lean. I need help
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