Step | Action | Value | Yes | No |
|---|---|---|---|---|
1 | Do you hear a high pitched whine during cranking (before the engine fires) but the engine cranks and fires normally? | -- | ||
2 | Reduce the distance between the starter pinion and the flywheel. Refer to Starter Noise Test . Has the noise stopped? | -- | System OK | |
3 | As the key is being turned, do you hear a high-pitched whine after the engine fires? (The engine cranks and fires normally. This is often diagnosed as starter hang-in or a weak solenoid.) | -- | ||
4 | Increase the distance between the starter pinion and the flywheel. Refer to Starter Noise Test . (Flywheel runout makes this appear to be intermittent.) Has the noise stopped? | -- | System OK | |
5 | Is there a loud "whoop" after the engine fires, but while the starter is still held engaged? (It may sound like a siren if the engine is revved while the starter is engaged.) | -- | ||
6 | Do you hear a "rumble", a "growl", or, in severe cases, a "knock" as the starter is coasting down to a stop after starting the engine? | -- | System OK | |
7 | Replace the starter motor. Refer to Starter Motor Replacement . Has the noise stopped? | -- | System OK | -- |
