Engine Cranks Slowly

Perform the following tests:
^ Battery Battery Inspection/Test. Refer to Battery Inspection/Test. Battery Inspection/Test
^ Wiring - Inspect the wiring for damage. Inspect all connections to the starter motor, solenoid, battery, and all ground connections. Refer to Circuit Testing , Wiring Repairs , Testing for Intermittent and Poor Connections , and Connector Repairs in Diagnostic Aids.
^ Engine - Verify that the engine is not seized.

If the battery, the wiring and the engine are functioning properly and the engine continues to crank slowly, replace the starter motor.