No Tach Indication Or Tach Indication Erratic
- Ensure engine is operating properly and is not misfiring. If misfiring, repair problem as required. If okay, remove instrument cluster. Wiggle connections and wiring near coil while measuring resistance between pin "9C" and coil.
- If reading is less than 100 ohms, replace speedometer module. Recheck cluster operation. If reading is greater than 100 ohms, repair open in circuit wiring.