PRE-RELEASE
Starter Noise Diagnosis
| Starter Noise Diagnosis |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| Circuit/System Description |
PG starter motors cannot be repaired. They have pole pieces arranged around the armature. Both solenoid windings are energized. The pull-in winding circuit is completed to the ground through the starter motor. The windings work together magnetically to pull and hold in the plunger. The plunger moves the shift lever. This action causes the starter drive assembly to rotate on the armature shaft spline as it engages with the flywheel ring gear on the engine. Moving at the same time, the plunger also closes the solenoid switch contacts in the starter solenoid. Full battery voltage is applied directly to the starter motor and it cranks the engine.
| Reference Information |
Description and Operation
Starting System Description and Operation
| Circuit/System Verification |
Start the engine. Listen to the starter noise, while the engine is cranking. Compare the concern to a similar vehicle.
| Circuit/System Testing |
| 1. |
Remove the flywheel inspection cover.
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| 2. |
Inspect the flywheel for the following:
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Loose flywheel bolts
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Chipped gear teeth
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Missing gear teeth
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Bent flywheel
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Debris in the bell housing
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| 3. |
If there is anything not up to specification: Remove any debris and tighten the flywheel screws, or repair or replace the flywheel.
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| 4. |
If all inspections were within specification, replace the starter motor.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
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Fastener Tightening Specifications
for the 2.8L (LBW) engine
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Engine Flywheel Replacement
for the 2.8L (LBW) engine
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Starter Replacement (2.0L Diesel)
Starter Replacement (LDK/A20NHT)
Starter Replacement (LAU/A28NER)
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