5 /5 William Shaffer: My 03 F150 had symptoms of a bad mass air flow sensor. I bought one from Napa. Got a service engine soon light. Had it scanned at auto zone. Took the printout to the store. They said I would have to take it to a certified mechanic. I chose Buckleys. They got me in quick. They found a vacuum hose loose. And broke a coolant hose. Replaced it with no charge. It was dry rotted. Cool. Got a better maf sensor from Napa. A swap. Solved the problem. Charley is on top of things and very calm. Alpha all the way. I highly recommend Buckleys.