Speed Continuously Changes Up & Down

1. Check to ensure proper operation of actuator linkage. If found satisfactory, proceed to step 2. If not found satisfactory, service or replace actuator linkage.
2. Perform tests on actuator. If found satisfactory, proceed to step 3. If not found satisfactory, replace actuator.
3. Check operation of speedometer cable for proper routing and ensure no sharp bends or binding exists. If found satisfactory, proceed to step 4. If not found satisfactory, service or replace speedometer cable.
4. Check to ensure proper operation of sensor. If found satisfactory, proceed to step 5. If not found satisfactory, replace sensor.
5. Perform tests on amplifier. If found satisfactory, proceed to step 6. If not found satisfactory, replace amplifier.
6. Examine all connectors to ensure proper contacts.