Juan's Auto Repair on Main Street in Chula Vista has provided general mechanical maintenance and repair since 2005, expanding from an 800-square-foot bay to a 3,000-square-foot facility in 2014 to meet growing South Bay demand. The appointment-only shop handles brake service, engine diagnostics, cooling-system repair, fuel-system work, and timing-belt replacement—the deeper mechanical interventions that fall beyond routine fluid changes at nearby Jiffy Lube Oil Change. Specialization excludes auto-body work, transmission rebuilds, catalytic-converter replacement, and smog certification, allowing the technicians to concentrate diagnostic time on engine and drivability concerns. Computer-scan diagnostics cover OBD-II fault codes across Honda, Toyota, Dodge, Chevrolet, and Jeep platforms, with spark-plug replacement, serpentine-belt service, and starter-motor swaps among the most-requested procedures. Drivers along the Main Street corridor pair mechanical service with fuel stops at Top Fuel, consolidating routine vehicle upkeep within the same western Chula Vista commercial zone. The shop's most involved procedures include multi-point timing-belt and water-pump replacement kits with tensioner and idler-pulley swap on interference-engine platforms, torqued to manufacturer specification with cam and crank timing verified by degree wheel.