2020 Edge St Shakes

Edgy-ST · September 29, 2022

Wondering if anybody has had issues with a 2020 Edge St shaking while accelerating at higher speeds? It gets worse while towing something. Dealer said I needed new tires but all the wheels and tires checked out fine from a trusted tire shop. To me it feels like the driveshaft.

Haz · September 30, 2022

From the 2020 Edge Workshop Manual...

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

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.

Symptom Chart: Noise Vibration Harshness (NVH) - Edited for Edgy-ST's specified symptom

Condition Possible Sources Actions

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 (177kW/240PS) – 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 (177kW/240PS) – 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 - 2.7L 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 (177kW/240PS) – MI4 (205-01 Driveshaft, Removal and Installation). REFER to: Rear Driveshaft - 2.7L EcoBoost (238kW/324PS) (205-01 Driveshaft, Removal and Installation).