How many oxygen sensors does a ford F 150 5.0 engine have?

A Ford F-150 with a 5.0-liter engine typically has four oxygen sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). These sensors monitor the oxygen levels in the exhaust gases to help optimize fuel efficiency and emissions. However, the exact number may vary based on the specific model year and emissions configuration, so it's always good to check the owner’s manual or service information for the specific vehicle.