
DIY Car Repair: How to Tackle a Check Engine Light and Boost Your Toyota 4Runner's MPG
A recent online video showcases a detailed do-it-yourself guide for addressing a common automotive issue: the persistent 'check engine light' (CEL) in a Toyota 4Runner. The video, uploaded by user 'romo', demonstrates the process of replacing an oxygen (O2) sensor and installing spacers, a technique aimed at resolving the CEL and potentially improving fuel economy by 1-2 miles per gallon. The repair involves lifting the vehicle for clearance, carefully removing the old O2 sensor, installing the new component with a spacer for optimal performance, and resetting the vehicle's onboard computer by temporarily disconnecting the battery. This practical guide offers valuable insights for car owners looking to perform routine maintenance and troubleshoot engine light issues independently.