Symptom Chart: Engine-Speed Related Vibrations

WARNING: This page is about a different car, the 2018 Lincoln MKC. 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 powertrain-speed related vibrations are normal though they should not be felt in the passenger compartment.

Condition	Possible Sources	Actions
0.5 order engine vibration	Engine	Symptom Chart: NVH REFER to: Engine .
0.5 order engine vibration	Engine	Symptom Chart: NVH REFER to: Engine .
First through sixth order engine vibration	Engine	Symptom Chart: NVH REFER to: Engine .
	Engine mounts	Symptom Chart: NVH REFER to: Engine .
	Transmission/transaxle	Symptom Chart: NVH REFER to: Diagnosis By Symptom .
	Exhaust system	Symptom Chart: NVH REFER to: Exhaust System 2.0L EcoBoost (177kW/240PS) - MI4 . or REFER to: Exhaust System 2.3L EcoBoost (201kW/273PS) .
Belt driven accessory drive vibration	Engine pulley	Symptom Chart: NVH REFER to: Engine .
	Accessory drive belt	Symptom Chart: NVH REFER to: Accessory Drive 2.0L EcoBoost (177kW/240PS) - MI4 . or REFER to: Accessory Drive 2.3L EcoBoost (201kW/273PS) .
	Coolant pump	Symptom Chart: NVH REFER to: Engine Cooling 2.0L EcoBoost (177kW/240PS) - MI4 . or REFER to: Engine Cooling 2.3L EcoBoost (201kW/273PS) .
	Generator	Symptom Chart: NVH REFER to: Charging System - System Operation and Component Description .
	A/C compressor	Symptom Chart: NVH REFER to: Climate Control System .