Symptom Chart: NVH

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Actions
Axle howling or whine - front or rear axle	Damaged or worn wheel hub bearings	CHECK for abnormal wheel hub bearing play or roughness. Refer to: Front Wheel Bearing And Wheel Hub .
Driveline clunk - loud clunk when shifting from REVERSE to DRIVE	Damaged or worn CV joints	INSPECT the CV joints for wear or damage. INSTALL a new halfshaft or driveshaft as necessary. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
	Loose hub nut	CHECK the torque on the hub nut. REPLACE the hub nut if the torque is not at specification. For front hub nuts. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
Driveline clunk FWD (vehicles) -- occurs during acceleration or from cruise to coast/deceleration	Damaged or worn CV joints	INSPECT the inner CV joint and boot. INSTALL a new halfshaft as necessary. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
	Loose hub nut	CHECK the torque on the hub nut. REPLACE the hub nut if the torque is not at specification. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
Driveline clunk -- occurs as the vehicle starts to move forward following a stop	Loose hub nut	CHECK the torque on the hub nut. REPLACE the hub nut if the torque is not at specification. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
Clicking, popping or grinding - occurs while the vehicle is turning	Inadequate or contaminated lubrication in the CV joints	CHECK the CV boots and joints for wear or damage. INSTALL new components as necessary. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
	Another component contacting the halfshaft	CHECK the halfshafts and the area around the halfshafts. REPAIR as necessary.
Grunting -- normally associated with a shudder experienced during acceleration from a complete stop	Halfshaft CV joint binding	CHECK the outer CV joint for correct seating into the hub. REPAIR as necessary. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 .
Driveline vibration - occurs at cruising speeds	Incorrectly seated CV joint in the wheel hub	CHECK the outer CV joint for correct seating into the hub. REPAIR as necessary. Refer to: Front Halfshaft LH - 6-Speed Automatic Transmission - 6F15 . Refer to: Front Wheel Bearing And Wheel Hub .