Tachometer Repair

Tachometer

NOTE: The tach needle will not return to zero if the engine is turned oft while the engine speed is 4,000 rpm or higher when the Room fuse is not installed. The tach needle will continue to rotate clock wise until it rests on the wrong side of the stopper pin. If a customer complains of this concern, inspect the vehicle and if necessary, repair according to the following steps.




1. Verify the concern.
2. Verify that the Room fuse is installed.




3. Start the engine and increase the engine speed to approximately 5,500 rpm or until the needle begins to move away from the stopper pin (counter-clock wise).
4. Decrease the engine speed to idle and turn the ignition switch to LOCK position.




5. Verify that the needle returns to zero.
- If the above procedure does not move the needle back to zero, remove the lens and carefully move the needle by hand.