How do I diagnose a faulty starter in an Audi 80?

I'm having trouble starting up my Audi 80 and suspect the starter may be the issue. How can I effectively diagnose and fix this problem?

One approach you can take is to check the voltage on the starter solenoid with a multimeter. If the voltage is low, it could be a sign of a failing starter. Additionally, you can also try tapping on the starter with a hammer while someone attempts to start the car – this can sometimes temporarily get a worn starter to work. It may also be helpful to check the connections on the starter and ensure they are secure.

Another possible cause for a faulty starter in an Audi 80 could be a weak battery or corroded battery terminals. Try testing the battery's voltage and replace it if necessary. You can also clean the terminals with a baking soda and water mixture to remove any corrosion.