Lincoln Nautilus: Driveshaft / Driveshaft. Diagnosis and Testing

Lincoln Nautilus 2018-2026 Service Manual / Chassis / Driveline / Driveshaft / Driveshaft. Diagnosis and Testing

Preliminary Inspection

Verify the customer concern.

Visually inspect the CV joints for obvious signs of mechanical damage.

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step

If the cause is not visually evident, verify the symptom and REFER to Symptom Chart: NVH.

Symptom Chart(s)

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom Chart: NVH

Symptom Chart

Condition	Possible Sources	Actions
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 driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
	Damaged driveshaft center bearing support	INSPECT the insulator for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
Driveline clunk — occurs as the vehicle starts to move forward following a stop	Worn driveshaft CV -joint with excessive play	INSPECT the CV -joint for a worn condition. INSTALL a new driveshaft if necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
	Damaged driveshaft center bearing support	INSPECT the insulator for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
Buzz – buzzing noise is the same at cruise or coast/deceleration	Incorrect driveline angles	CHECK for correct driveline angles. REPAIR as necessary. REFER to: Driveshaft Angle Measurement (205-01 Driveshaft, General Procedures).
Rumble or Boom – noise occurs at coast/ deceleration, usually driveshaft speed-related and noticeable over a wide range of speeds	Driveshaft out of balance	CHECK the driveshaft for damage, missing weights or undercoating. REFER to: Driveshaft Runout and Balancing (205-01 Driveshaft, General Procedures). INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
Grunting — normally associated with a shudder experienced during acceleration from a complete stop	Driveshaft CV -joint binding	INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
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 (205-01 Driveshaft, General Procedures).
	Binding or damaged driveshaft CV -joint	INSPECT the driveshaft CV -joints and coupling shaft for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
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 - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
	Loose axle pinion flange bolts	INSPECT the axle pinion flange. TIGHTEN the pinion flange bolts to specification. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
	Excessive axle pinion flange runout	CARRY OUT a runout check. REPAIR as necessary. REFER to: Specifications (205-01 Driveshaft, Specifications).
	Driveshaft is out of balance	CHECK the driveshaft for damage, missing balance weights or undercoating. CHECK the driveshaft balance. CARRY OUT a driveline vibration test. REFER to: Driveshaft Runout and Balancing (205-01 Driveshaft, General Procedures).
	Binding or damaged driveshaft CV -joint	INSPECT the driveshaft CV -joint for wear or damage. INSTALL a new driveshaft as necessary. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).
	Excessive driveshaft runout	CARRY OUT a runout check. REFER to: Driveshaft Runout and Balancing (205-01 Driveshaft, General Procedures).
	Driveline angles out of specification	CHECK for correct driveline angles. REPAIR as necessary. REFER to: Driveshaft Angle Measurement (205-01 Driveshaft, General Procedures).
	Center bearing bolts not properly seated	REPLACE and TORQUE the center bearing bolts. REFER to: Rear Driveshaft - 2.0L EcoBoost (184kW/250PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).

Specifications

Item 2.0L EcoBoost 2.7L EcoBoost Driveshaft runout 0.6 mm (0.024 in) 0.6 mm (0.024 in) Driveshaft to PTU joint angle @ curb ride height 3...

Driveshaft Angle Measurement. General Procedures

Check NOTE: This procedure does not apply to CV joints, flex couplers or double cardan joints that are used in some driveshafts. This check is for single-cross and roller-style joints found in the driveshafts...

Other information:

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Replacing the Rear Wiper Blades

Lincoln Nautilus. Replacing the Rear Wiper Blades

Lift the wiper arm.

Note: Do not hold the wiper blade to lift the wiper arm.

Remove the wiper blade.