NO.22 VIBRATION CONCERNS (ENGINE) [ZJ, Z6]


B3E010318881W55

22

VIBRATION CONCERNS (ENGINE)

DESCRIPTION

• Vibration from under hood or driveline

POSSIBLE CAUSE

• Loose attaching bolts or worn parts
• Components malfunction such as worn parts

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION

1
Inspect following components for loose attaching bolts or worn parts:
• Cooling fan
• Generator
• Drive belt and pulleys
• Exhaust system mounting
• Engine mounting
All the items normal?
Yes
Inspect the following systems:
• Wheels
• ATX
• Driveline
• Suspension
No
Readjust or retighten engine mounting installation position.
Service if necessary for other parts.
2
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
• If malfunction remains, inspect related Service information perform repair or diagnosis.
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace PCM.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZJ, Z6].)