EDI DIAGNOSIS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 5E-91
Troubleshooting Charts (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
EXCESSIVE
ENGINE
NOISES
1. Drive belt squeal, insufficient
tension or abnormally high
loading.
2. Intake air or exhaust leaks.
3. Excessive valve lash.
4. Turbocharger noise.
5. Gear train noise.
6. Power function knock.
1. Inspect the drive belt. Check
drive belt tension.
2. Refer to Excessive Exhaust
smoke (Engine Diagnosis
Performance).
3. Make sure the push rods are
not bent and rocker levers are
not severely worn Replace
Bent or severely worn pads.
4. Check turbocharger impeller
and turbine wheel for housing
contact. Repair/replace as
required.
5. Visually inspect and measure
gear backlash. Replace gears
as required.
6. Check/replace rod and main
bearings.
ALTERNATOR
NOT
CHARGING OR
INSUFFICIENT
CHARGING
1. Loose or corroded battery.
2. Alternator belt slipping.
3. Alternator pulley loose on
shaft.
4. Improperly operating alterna-
tor.
1. Clean/tighten battery
connection.
2. Check/replace and adjust
belt.
3. Tighten pulley.
4. Check/replace alternator.
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