NO.22 VIBRATION CONCERNS (ENGINE) [L8, LF]

id0103a0802800

22 | VIBRATION CONCERNS (ENGINE)
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DESCRIPTION | • Vibration from under bonnet or driveline.
POSSIBLE CAUSE | • Loose attaching bolts or worn parts • Components malfunction such as worn parts • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | RESULTS | ACTION
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1 | Inspect the following components for loose attaching bolts or worn parts: • Cooling fan • Drive belt and pulleys • Engine mounts • Exhaust system mounts • Generator Is there any malfunction? | Yes | Inspect the following systems: • Driveline • Suspension • Wheels Repair or replace the malfunctioning part according to the inspection results.
No | Readjust or retighten engine mount installation position. Service if necessary for other parts.
2 | Verify test results. • If normal, return to diagnostic index to service any additional symptoms. (See ENGINE SYMPTOM TROUBLESHOOTING [L8, LF].) • 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 the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF].)