Hey guys, as the title states, the tach in the car will "bounce" about once a second, while the Engine is OFF, with the key in the ON or RUN position. I did a couple searches on here, and google. Found someone with a similar issue, but no fix.
Car is a 97 GrandPrix GT with the 3800 Series II.
Removed, cleaned, and refastened grounds already. Stuck my head under the dash and checked every harness connection I could, nothing loose or damaged.
Should I be concerned that the crank sensor is on its way out, or? Been doing it for 6 months now, for as long as I have owned the car.
Should add, car starts and runs fine, no driveability issues to be had.
Insight?
Jay
