How To Test A Car Starter Motor. What You Will Need. Seen this a few times Battery or starter most recent few have been starter obviously check the main engine earth and live to the starter but the found the bearings in the starter partially seized causing slow turn over.
Step 1 Check the starter pinion. Test that the starter motor is receiving the START signal from the ignition switch. With a wire-piercing probe or a suitable tool pierce the wire that is attached to the S terminal of the starter solenoid.
The hardest part is removing the starter motor.
Learn how to diagnose an automobile no-start condition by performing simple battery load and voltage drop tests using. With a wire-piercing probe or a suitable tool pierce the wire that is attached to the S terminal of the starter solenoid. Test the battery first. Tighten any loose connections with an adjustable wrench.
