Pinpoint Test C: Unusual Starter Noise

Starting System

Pinpoint Test C: Unusual Starter Noise

This pinpoint test is intended to diagnose the following:

- Starter motor

- Starter motor mounting

- Starter motor engagement

- Flexplate or flywheel ring gear

- Starter motor drive gear

PINPOINT TEST C : UNUSUAL STARTER NOISE

C1 CHECK THE STARTER MOUNTING

- Inspect the starter motor mounting bolts for looseness.

Is the starter motor mounted correctly?

Yes
GO to C2.

No
INSTALL the starter motor correctly. REFER to Starter Motor - 2.5L or Starter Motor - 3.0L . TEST the system for normal operation.

C2 CHECK FOR ENGINE NOISE

- Connect a remote starter switch between the starter solenoid B- and S-terminals.





- Engage the starter motor and verify the noise is due to the starter operation.

Is the noise due to the starter motor engagement?

Yes
GO to C3.

No
REFER to Engine to continue diagnosis.

C3 CHECK FOR UNUSUAL WEAR

- Remove the starter motor. Refer to Starter Motor- 2.5L or Starter Motor- 3.0L .

- Inspect the ring gear for damaged or worn teeth.

Is the noise due to flexplate or flywheel ring gear tooth damage?

Yes
INSTALL a new flexplate or flywheel. EXAMINE the starter pinion teeth. If damaged, INSTALL a new starter motor. REFER to Starter Motor - 2.5L or Starter Motor - 3.0L . TEST the system for normal operation.

No
INSTALL a new starter motor. REFER to Starter Motor - 2.5L or Starter Motor - 3.0L . TEST the system for normal operation.