Starting System — Pinpoint Test(S) — Pinpoint Test B : Unusual Starter Noise

DIAGNOSIS AND TESTING > STARTING SYSTEM > PINPOINT TEST(S) > PINPOINT

TEST B : UNUSUAL STARTER NOISE

Unusual Starter Noise

Normal Operation and Fault Conditions

Correct starter operation relies on correct mounting of the starter to the engine, alignment of the starter ring gear to the flexplate and correct functioning of the starter assembly (internal gears, bearings).

Possible Sources

Engine

Starter motor

Starter motor mounting

Visual Inspection and Diagnostic Pre-checks

Inspect the starter motor.

Inspect the starter motor mounting.

DIAGNOSIS AND TESTING > STARTING SYSTEM > PINPOINT TEST(S) > PINPOINT

TEST B : UNUSUAL STARTER NOISE > PINPOINT TEST B : UNUSUAL STARTER NOISE

B1 CHECK THE STARTER MOUNTING

Inspect the starter mounting bolts for looseness.

Is the starter motor mounted correctly?

B2 CHECK FOR STARTER NOISE

Ignition OFF.

Connect a remote starter switch between the starter solenoid C197A-1 ("B" terminal) and C197C-1 ("S" terminal).

Engage the starter and verify the noise is due to starter operation.

Is the noise due to the starter engagement?