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  1. O

    Tech2 scanner

    Tech2 (OBD-2) isn’t compatible with Tech 1 (OBD-1). They use different PCMs, different communication methods, and the OBD-1 pinout is not the same as OBD-2. Also, don’t overlook vehicle grounds—especially the passenger-side rear intake manifold stud, which is a critical PCM ground and likely the...
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