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Lancia Thesis Factory Service Manual (2002-2009)22 · Fault diagnosis

Lancia
Thesis Factory Service Manual (2002-2009)
Fault diagnosis
STEERING – vehicle behaviour
Steering wheel oscillations/vibrations - whilst driving

22 · Diagnostics

Steering wheel oscillations/vibrations - whilst driving

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: STEERING – vehicle behaviour › Steering wheel oscillations/vibrations - whilst driving

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Fault diagnosisSteering wheel oscillations/vibrations - whilst driving

STEERING WHEEL OSCILLATIONS/VIBRATIONS - WHILST DRIVING

The steering wheel vibrates whilst the vehicle is being driven.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	RIM AND TYRE CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the following, in order: tyre inflation pressure; that the rims are not distorted; the state of the tyres that there is no clearance in the steering linkage	Move on to Step	1. Tyre inflation pressure not correct	1. Restore the correct pressure
			2. Front rims distorted	2. Replace the distorted rims See in Op. 4450B10 Front WHEEL (one) - R.R.
			3. Irregular tyre wear	3. Continue following the instructions in Table X50
			4. Presence of clearance	4. Replace the components involved
2	CHECK ON VIBRATIONS AT LOW SPEED	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the following, testing the vehicle at low speed (below 60 km/h): that there are no vibrations at the steering wheel; that the vehicle does not oscillate	Move on to Step	Vibrations at the steering wheel (Shimmy): axial ovality/distortion of the front rim-tyre	Balance the front wheels < R1 >, if necessary replace the tyre/rim < R2 > See in Op. 4450B28 Left front TYRE, with wheel removed - R.R.
3	CHECK ON VIBRATIONS AT MEDIUM SPEED	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Testing the vehicle at medium speed (60-80 km/h), check whether there are vibrations at the steering wheel and the floor panel, passenger side	Move on to Step	Vibrations at the steering wheel and floor panel	Check the alignment of the driveshaft three lobe joint - gearbox. If necessary, restore the alignment
4	CHECK ON VIBRATIONS AT MEDIUM-HIGH SPEED	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Testing the vehicle at medium-high speed (above 80 km/h), check whether there are vibrations at the steering wheel	Move on to Step	1. Vibrations at the steering wheel: front wheels not balanced	1. Balance the front wheels See in Op. 4450B42 Front WHEELS, removed - Balancing at the bench
			2. Vibrations at the steering wheel: front hubs out of alignment	2. Replace the hubs See in Op. 4450C10 front pillar (one), l/h or r/h complete with wheel hub - r+r with wheel removed - check wheel geometry separately
			3. Vibrations elsewhere: rear wheels not balanced	3. Balance the rear wheels See in Op. 4450B43 Rear WHEELS, removed - Balancing at the bench
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present

‹ Prev Steering too sensitive Next › THE ELECTRIC STEERING LOCK DOES NOT RELEASE (vehicle with passive entry)

Parts & tools for this job For 2002 Lancia Thesis

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