Step | Action | Value | Yes | No |
|---|---|---|---|---|
1 | This vehicle uses a PG260 F1 starter motor. During initial starter motor installation, shims are not used. Is the proper starter motor being used? | -- | ||
2 | Do you hear a high pitched whine during cranking (before the engine fires) but the engine cranks and fires normally? | -- | ||
3 | If diagnosis of the noise indicates that the pinion clearance is incorrect, reduce the distance between the starter pinion and the flywheel. Single shims installed on the outside bolt are used to decrease clearance. Install 1.0 mm (0.04 in) full shims, one at a time, until the noise is gone. Has the noise stopped? | -- | System OK | |
4 |
Do you hear a high-pitched whine after the engine starts? | -- | ||
5 | Increase the distance between the starter pinion and the flywheel. Flywheel runout makes this appear to be intermittent. Double shims used on both bolts are used to increase clearance. Do not use more than two shims and do not exceed 2.0 mm (0.08 in). Has the noise stopped? | -- | System OK | |
6 | Is there a loud whoop after the engine starts, but while the starter is still held engaged? (It may sound like a siren if the engine is revved while the starter is engaged.) | -- | ||
7 | Replace the starter motor. Refer to Starter Motor Replacement . Has the noise stopped? | -- | System OK | |
8 | Do you hear a rumble, a growl, or, in severe cases, a knock as the starter motor is coasting down to a stop after starting the engine? | -- | ||
9 | Replace the starter motor. Refer to Starter Motor Replacement Has the noise stopped? | -- | System OK | |
10 | Check flywheel runout. Refer to Engine Flywheel Replacement in Engine Mechanical - 3.0L for diagnosis and repair. Is the action complete? | -- | System OK | -- |
