How to change a starter - 1990 Chevrolet Cavalier

Starter - There are like 2 or 3 bolts on most starters that are long and go into the engine block. Then there is the electrical positive connection which should be removed only after the battery has been disconnected to avoid shock and fire caused by a short in the electrical system when disassembling or assembling (warning: this a safety measure designed to keep you from hurting yourself or the car). Assembly is the reverse of the removal.
TESTING No-Load Test Make the connections as shown in the illustration. Close the switch and compare the rpm, current and voltage readings with the specifications found in the chart located in this section. Fig. 1: Proper connections for the starter no-load test

• Current draw and no load speed within specifications indicates normal condition of the starter motor.
• Low free speed and high current draw indicates worn bearings, a bent armature shaft, a shorted armature or grounded armature fields.
• Failure to operate with high current draw indicates a direct ground in the terminal or fields, or frozen bearings.
• Failure to operate with no current draw indicates an open field circuit, open armature coils, broken brush springs, worn brushes or other causes which would prevent good contact between the communtator and the brushes.
• A low no load speed and low current draw indicates high internal resistance due to poor connections, defective leads or a dirty commutator.
• High free speed and current draw usually indicate shorted fields or a shorted armature.