It on a 2001 f150 with the 4.6 triton... This is my first OBD2 compliant vehicle and my first vehicle with an MAF sensor. I know I need to probe the connectors, but which ones do I probe and what's the process? I have a check engine light for a lean code on Bank 1 & 2. I have a K&N intake on it and plan on going back to stock at some point. I got my reason to hate K&N intakes because of where I live, but that's a whole nother post.

Thanks in advance! I know Chevy TBI like the back of my hand, it'll be a whole new learning curve trying to figure out a newer truck lol.

The fuel filter isn't that old, Pump is good AFAIK, and I can't find any vacuum leaks using propane. I cleaned the MAF sensor and it helped a bit (Code took longer to throw after I erased it). It runs a lot better after the cleaning as well. Not that it didn't run well before, just a little more power and throttle response.