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Tach sits at 500 RPM when off
The Tach sits at 500 RPM when the engine is off (key in the off position). Regardless of what location the key is in (off or acc) the Tach still sits at 500RPM. This is a recent development as prior to about a week ago the Tach would sit at 0 RPM when off. It reads correctly while the car is on and running (verified via RTek2.1 pocketlogger software). Any suggestions on how to remedy this situation?
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