Jeep 4801268AB Starter Motor

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If you encounter a malfunction in the starting circuit, don't immediately assume the starter is the issue. First, check the battery cable clamps for cleanliness and tightness, inspect the battery cables, and test the battery's condition. Verify the starter motor wiring, mounting bolts, related fuses, ignition switch circuit, starter relay, and the operation of the clutch safety switch or Park/Neutral position switch. If the starter doesn't activate when turning the ignition switch, check for battery voltage to the starter solenoid to ensure it's receiving the correct voltage. If voltage is absent, check the fuses and starter relay. If voltage is present but there's no movement from the starter motor, remove and bench test the starter. If the starter turns over slowly, test the starter cranking voltage and current draw from the battery while observing battery voltage not dropping below 9.6 volts and current draw not exceeding 160 amps. If the starter is receiving voltage but doesn't activate, remove and check the starter motor assembly on the bench, paying attention to the solenoid's operation and pinion drive rotation to diagnose any defects. In rare cases, check for engine seizure before proceeding.

Remove the starter from the engine. Note: On 3.7L V6 engines, position the starter so that the front of the starter faces the rear of the vehicle and the solenoid faces downward, then remove the starter by passing it between the exhaust pipe and transmission bellhousing.

Raise the vehicle and support it securely on jackstands.

On some vehicles, it may be necessary to remove the exhaust pipe(s) or frame cross member to gain access to the starter motor.

It could indicate a bad battery, burned fusible link, or defective solenoid.

Remove and check the starter motor assembly on the bench, paying attention to the solenoid's operation and pinion drive rotation to diagnose any defects. In rare cases, check for engine seizure before proceeding.