Starter motor

[Sharpy]

When the starter works its fine but most time its just a buzz Starter motor wants to work but the solinoid fails to do its job with the gear. Should i replace the solinoid or the starter motor complete. Or should i check something else with the wiring? 1980 244 Thanks

[billofdurham]

Before replacing anything test the circuits for the solenoid and the starter motor.

1. Switch on the headlights and turn the ignition key. If the lights dim then it indicates that current is reaching the starter motor, therefore, the fault most probably is the motor. If the lights stay bright and no clicking sound can be heard from the solenoid it would indicate a solenoid problem.

2. Make sure you know your radio code. If a fault is suspected disconnect the battery leads (including the earth lead to the body), the starter/solenoid wiring and the engine/transmission earth strap. Thoroughly clean all the connections and reconnect them. At this point it is worth smearing petroleum jelly on the battery terminals. Using a voltmeter or test lamp check that full battery voltage is available at the positive lead on the solenoid.

3. If all the leads and connections are sound check the circuit by disconnecting the wire from the solenoid blade terminal. Connect a voltmeter or test lamp between the wire and a good earth (eg the battery negative terminal) and check the wire is live when the ignition key is turned to the 'start' position. If it is, then the circuit is sound.

4. If you are still experiencing problems the solenoid contacts can be checked by connecting a voltmeter or test lamp between the positive feed connection on the starer side of the solenoid and earth. When the ignition is turned to the'start' position you should get a reading or a light. If there is no reading or a light then the solenoid is faulty and should be renewed.

5. If the solenoid and its circuit are proved sound then the fault must lie in the starter motor. They can be overhauled by specialist shops but usually it is more economical to obtain an exchange motor.

It sounds more complicated than it is and could save some money. One of the main causes of poor starter motor operation is bad connections.


Bill.