Symptom Table - Engine-Speed Related Vibrations

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When an engine-speed related vibration is present, engine, engine accessory and engine firing calculations should be carried out.

NOTE: Any assembly that is out of balance will only cause a first order vibration, it will not cause a higher order vibration.

NOTE: Some engine-speed related vibrations are normal though they should not be felt in the passenger compartment.

SYMPTOM TABLE - ENGINE-SPEED RELATED VIBRATIONS

Condition	Possible Sources	Action
0.5 order engine vibration	Engine	REFER to SYMPTOM TABLE .
First through sixth order engine vibration	Engine	REFER to SYMPTOM TABLE .
-	Transmission/transaxle	Refer to the appropriate AUTOMATIC TRANSMISSION article for the procedure. Refer to the appropriate CLUTCH or MANUAL TRANSMISSION articles for the procedure. Go to the symptom table in the appropriate article.
-	Engine mounts	REFER to SYMPTOM TABLE .
-	Transmission/transaxle mounts	Refer to the appropriate AUTOMATIC TRANSMISSION article for the procedure. Refer to the appropriate CLUTCH or MANUAL TRANSMISSION articles for the procedure. Go to the symptom table in the appropriate article.
-	Exhaust system	REFER to SYMPTOM TABLE -- NVH .
Belt driven accessory speed vibration	Engine pulley	REFER to SYMPTOM TABLE - NVH .
	Coolant pump	REFER to SYMPTOM TABLE - NVH .
-	Generator	REFER to SYMPTOM TABLE .
-	A/C compressor	REFER to SYMPTOM TABLE -- NVH .
-	Power steering pump	REFER to SYMPTOM TABLE -- NVH .
-	Vacuum pump	REFER to SYMPTOM TABLE - NVH .
-	Accessory drive belt	REFER to SYMPTOM TABLE - NVH .