LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2006 >> Vibe Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Starter >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> Starter Motor Noise Diagnosis >> Diagnostic Aids

Diagnostic Aids

Inspect the flywheel ring gear for damage or unusual wear.

Shim the starter as required.

In order to add pinion to ring gear clearance a full size shim must be used. Do not shim only one starter mounting bolt. There are 3 shims available in different shapes, for clearance, all are 1 mm (0.039 in) thick.

Starter Motor Noise Diagnosis

Step Action Yes No
1 Did you review the Diagnostic Starting Point for Engine Electrical and perform the necessary inspections? Go to Step 2  Go to Diagnostic Starting Point - Engine Electrical 
2 Start the engine.
Does the starter operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Start the engine while listening to the starter motor turn.
Is there a loud "whoop?" It may sound like a siren if the engine is revved while the starter is engaged, after the engine starts, but while the starter is still held in the engaged position.		 Go to Step 6  Go to Step 4 
4 Do you hear a "rumble", a "growl", or, in some cases, a "knock" as the starter is coasting down to a stop after starting the engine? Go to Step 7  Go to Step 5 
5 When the engine is cranked, do you hear a high-pitched whine after the engine cranks and starts normally?
This is often diagnosed as a starter drive gear hang-in or a weak solenoid.		 Go to Step 8  Go to Step 7 
6 Inspect the flywheel ring gear for the following:
  • Chipped gear teeth
  • Missing gear teeth
  • Milled teeth

Is the flywheel bent, or does it have damaged teeth?		 Go to Step 9  Go to Step 10 
7
  1. Remove the starter motor. Refer to Starter Motor Replacement .
  2. Inspect the starter motor bushings and clutch gear.
Does the clutch gear have chipped or milled teeth or worn bushings?		 Go to Step 10  Go to Step 9 
8 Shim the starter motor away from the flywheel by adding shims between the starter motor and the engine block one at a time.
Flywheel runout may make this noise appear to be intermittent.
Did you complete the repair?		 Go to Step 11  -
9 Replace the flywheel. Refer to Engine Flywheel Replacement in Engine Mechanical - 1.8 L (LNK) or Engine Flywheel Replacement in Engine Mechanical - 1.8 L (LV6).
Did you complete the replacement?		 Go to Step 11  -
10 Replace the starter motor. Refer to Starter Motor Replacement .
Did you complete the replacement?		 Go to Step 11  -
11 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
scientia non olet · About LEMON Manuals