No. 22 Vibration Concerns (Engine)

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 the following components for loose attaching bolts or worn parts: Cooling fan Drive belt and pulleys Generator Engine mounts Exhaust system mounts All items normal?	Yes	Inspect the following systems: Wheels AT Driveline Suspension
1		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 SYMPTOM DIAGNOSTIC INDEX ). If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If vehicle is repaired, troubleshooting completed. If vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See PCM REMOVAL/INSTALLATION ).