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Showing results for tags 'firing order'.
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los 49ers posted a topic in Cadillac Performance: Brakes, Exhaust, Suspension, Engine HardwareDoes anyone know anything about spark plug decoders? Or the ESM... little black box wired to the distributor? Apparently California manufactured caddy's were the only ones with this! My caddy won't start and when I unplug this box, the car will start but idles high and stays there! Is there a way to remove or bypass this ECM/ESM? Please help!