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OBD-II Is Making Mechanics Worse
https://www.carsandhorsepower.com/featured/obd-ii-is-a-joke-real-mechanics-use-a-vacuum-gauge-and-a-screwdriver
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Modern mechanics rely too heavily on OBD-II scanners, often missing real engine problems. Discover why old-school tools like the vacuum gauge still outperform expensive scan tools—and how relying on codes is making mechanics worse at their jobs.
