Symptom Chart: NVH

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Actions
Driveline clunk - loud clunk when shifting from REVERSE to DRIVE	Damaged or worn driveshaft U-joint	INSPECT the driveshaft U-joints for wear or damage. INSTALL a new driveshaft U-joint or driveshaft as necessary. REFER to: Driveshaft Universal Joint .
Driveline clunk -- occurs as the vehicle starts to move forward following a stop	Worn driveshaft U-joint with excessive play	INSPECT the driveshaft U-joint for a worn condition. INSTALL a new driveshaft U-joint if necessary. REFER to: Driveshaft Universal Joint .
Buzz/rumble/boom noise that happens at a particular speed range and is unaffected by acceleration or deceleration	Driveshaft out of balance	CHECK the driveshaft for damage, missing weights or undercoating. CHECK the driveshaft balance. REFER to: Driveshaft Runout and Balancing . REPAIR ad ADJUST the driveshaft angle as necessary REFER to: Driveshaft Angle Adjustment . INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft .
	Worn or damaged driveshaft center bearing support	CHECK the insulator for damage or wear. ROTATE the driveshaft and CHECK for rough operation. INSTALL a new driveshaft as necessary REFER to: Rear Driveshaft .
	Misalignment of marking on driveshaft-to-pinion flange	REINSTALL driveshaft with making sure the alignment of marking. REFER to: Rear Driveshaft .
	U-joints are binding or seized	ROTATE the driveshaft and CHECK for rough operation or seized U-joints. INSTALL new U-joints or driveshaft as necessary. REFER to: Rear Driveshaft . REFER to: Driveshaft Universal Joint .
Buzz/rumble/boom noise that happens at particular speed range and is affected by acceleration or deceleration	Incorrect driveline angles	CHECK for correct driveline angles. REFER to: Driveshaft Angle Measurement . REPAIR and ADJUST the driveshaft angle as necessary. REFER to: Driveshaft Angle Adjustment . INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft .
Grunting -- normally associated with a shudder experienced during acceleration from a complete stop	Driveshaft CV joint and/or U-joint binding	INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft . REFER to: Front Driveshaft .
Driveline shudder - occurs during acceleration from a slow speed or stop	Driveline angles out of specification	CHECK for correct driveline angles. REFER to: Driveshaft Angle Measurement .
	Binding or damaged driveshaft CV joint and/or U-joint	INSPECT the driveshaft CV joint and/or U-joint and coupling shaft for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft . REFER to: Front Driveshaft .
Driveline vibration - occurs at cruising speeds	Worn or damaged driveshaft center bearing support	CHECK the insulator for damage or wear. ROTATE the driveshaft and CHECK for rough operation. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft .
	Center bearing bolts not properly seated	LOOSEN and TORQUE the center bearing bolts to specification. REFER to: Rear Driveshaft .
	Loose axle pinion flange bolts	INSPECT the axle pinion flange. TIGHTEN the pinion flange bolts to specification. REFER to: Rear Driveshaft .
	Excessive axle pinion flange runout	CARRY OUT a runout check. REPAIR as necessary. REFER to: Specifications .
	Driveshaft is out of balance	CHECK the driveshaft for damage, missing balance weights or undercoating. CHECK the driveshaft balance. REFER to: Driveshaft Runout and Balancing .
	Binding or damaged driveshaft CV joint and/or U-joint	INSPECT the driveshaft CV joint and/or U-joint for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft . REFER to: Front Driveshaft .
	Excessive driveshaft runout	CARRY OUT a runout check. REFER to: Driveshaft Runout and Balancing .
	Driveline angles out of specification	CHECK for correct driveline angles. REFER to: Driveshaft Angle Measurement . REPAIR as necessary.