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OBD-II Is A Joke – Real Mechanics Use A Vacuum Gauge And A Screwdriver

•  05/31/2025 12:24 AM

Is OBD-II killing real car repair skills? Many mechanics blindly trust scanners, replacing parts instead of diagnosing issues. Learn why a $20 vacuum gauge solves problems that $5,000 scan tools can’t—and how the best technicians still use both.