Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check for starting and charging? | Go to Step 2 | |||||||
2 | Verify the fault is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||
3 | Do you hear a high pitched whine during cranking (before the engine starts) however, the engine cranked and started normally? | Go to Step 7 | Go to Step 4 | ||||||
4 |
Important:: This is often diagnosed as a starter drive gear hang-in or a weak solenoid. As the ignition key is being turned, do you hear a high-pitched whine after the engine cranks and starts normally? | Go to Step 8 | Go to Step 5 | ||||||
5 | 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 9 | Go to Step 6 | ||||||
6 | 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 11 | Go to Step 9 | ||||||
7 | Shim the starter motor towards the flywheel by adding shims (on the outside), one at a time between the starter motor and the engine block. Did you complete the repair? | Go to Step 13 | -- | ||||||
8 | Shim the starter motor away from the flywheel by adding shims (on the inside), one at a time between the starter motor and the engine block. (Flywheel runout may make this noise appear to be intermittent). Did you complete the repair? | Go to Step 13 | -- | ||||||
9 |
Does the clutch gear have chipped or milled teeth or worn bushings? | Go to Step 12 | Go to Step 10 | ||||||
10 | Inspect the flywheel ring gear for the following:
Does the flywheel have damaged teeth or is bent? | Go to Step 11 | Go to Step 12 | ||||||
11 | Replace the flywheel. Refer to Engine Flywheel Replacement in Engine Mechanical. Did you complete the replacement? | Go to Step 13 | -- | ||||||
12 | Replace the starter motor. Refer to Starter Motor Replacement . Did you complete the replacement? | Go to Step 13 | -- | ||||||
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
