LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 556 (Starting System) >> System Tests >> Test D: Starter Noise Diagnosis >> Testing

Test D: Starter Noise Diagnosis: Testing

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. If diagnostic system check was not performed, go to DIAGNOSTIC SYSTEM CHECK - ENGINE ELECTRICAL  under SELF-DIAGNOSTIC SYSTEM. If diagnostic system check was performed, go to next step.
  2. Start the engine. Does the starter operate normally? If so, go to INTERMITTENTS  in SYMPTOMS - ENGINE ELECTRICAL under TROUBLE SHOOTING. If not, go to next step.
  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. If so, go to step  6. If not, go to next step.
  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? If so, go to step  7. If not, go to next step.
  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. If so, go to step  8. If not, go to step  7.
  6. Inspect flywheel ring gear for chipped, missing, or milled gear teeth and/or if flywheel is damaged or bent. If problem exists, go to step  9. If problem does not exist, go to step  10.
  7. Remove starter motor. See STARTER  under REMOVAL & INSTALLATION. Inspect starter motor bushings and clutch gear. If problem exists, go to step  10. If problem does not exist, go to step  9.
  8. Shim starter motor away from flywheel by adding shims between engine block and starter motor. After repairs, go to step  11.
  9. Replace flywheel. See appropriate ENGINE MECHANICAL article, under ENGINE. After repairs, go to step  11.
  10. Replace starter motor. See STARTER  under REMOVAL & INSTALLATION. When repair is complete, go to next step.
  11. Retest system to verify repair. If condition is corrected, system is okay. If condition is not corrected, go to step  3.
scientia non olet · About LEMON Manuals