23 · Diagnostics

Steering wheel oscillations/vibrations

Make: Alfa Romeo
Model: 159 Factory Service Manual
Year: 2005–2011
Section: Noise / vibrations › Steering wheel oscillations/vibrations

‹ Prev Noise ' power assisted steering / with the steering wheel stationary Next › Climate control system noisy / (in the engine compartment)

Fault diagnosisSteering wheel oscillations/vibrations

STEERING WHEEL OSCILLATIONS/VIBRATIONS

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check the following, in order: - engine idle speed - that the tyres are the correct type, in good condition and correctly inflated - correct tightening of wheel bolts	Move on to Step 1	Engine idle irregular	Proceed as instructed by the See table D010 ENGINE IDLE IRREGULAR
			Tyre inflation pressure not correct	Restore the correct tyre inflation pressure
			Tyres unsuitable or worn	Replace the tyres
			Wheel bolts not correctly tightened	Tighten the wheel studs correctly
1	WHEEL CHECK Check:	All OK	Problems encountered	Operation
	- that the wheels are correctly balanced - the condition of the wheel rims (they should not show signs of dents or distortions)	Move on to Step 2	Wheels not balanced	Balance the wheels correctly
		Move on to Step 2	Wheel rims dented or distorted	Replace the wheel rims
2	ENGINE FLEXIBLE MOUNTINGS CHECK	All OK	Problems encountered	Operation
	Check the condition and the centering of the engine frame, the engine flexible mountings and the engine side and gearbox side connecting rods	Move on to Step 3	Engine flexible mountings faulty	Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. Op. 1008A POWER UNIT FASTENINGS
			Engine side and gearbox side connecting rods faulty	Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. Op. 1008C POWER UNIT REACTION ELEMENTS
			Engine frame faulty	Adjust the fastenings: loosen the bolts, centre them in their housings and tighten them to the recommended torque. Op. 4410D10 FRONT SUSPENSION FRAME - R+R
3	STEERING COLUMN CHECK	All OK	Problems encountered	Operation
	Check the condition of the steering column support and that it is working properly. In particular, check: - that there is no clearance between the support bushes and steering column - that the steering column joints are correctly tightened - the condition of the steering column supports and that they are working properly	Move on to Step 4	Bushes worn or damaged	Restore the efficiency of the steering column. If necessary, replace the bearings involved Op. 4110A30 SUPPORT WITH STEERING CONTROL SHAFTS - R+R
			Joint spider clearance too large	Tighten the bolts or replace the steering column Op. 4110A30 SUPPORT WITH STEERING CONTROL SHAFTS - R+R
			Bearings worn or damaged	Restore the efficiency of the steering column. If necessary, replace the bearings involved
4	CHECK ON CONDITION OF FLEXIBLE MOUNTINGS AND BUSHES	All OK	Problems encountered	Operation
	Check the condition of the bushes and mountings. In the following order: - ball joints for steering box rods - bushes for upper and lower track control arms - anti-roll bar flexible mountings	Move on to Step 5	Steering box rod ball joints worn or damaged	Replace the rods Op. 4110B10 STEERING LINKS - R+R ON VEHICLE - CHECK TOE-IN/TOE-OUT SEPARATELY
			Bushes for upper or lower arms worn or damaged	Replace the upper track control arms Op. 4410B68 LOWER SWINGING ARM(ONE), LH OR RH OF FRONT SUSPENSION - R R -CHECK WHEEL ALIGNMENT SEPARATELY or the lower track control arms Op. 4410B40 LOWER TRACK CONTROL ARM (WITH BALLJOINT) FOR LEFT OR RIGHT FRONT SUSPENSION (ONE) - R+R - CHECK WHEEL GEOMETRY SEPARATELY
			Anti-roll bar mountings	Replace the flexible mountings for anti-roll bar Op. 4410C12 FRONT SUSPENSION ANTI ROLL BAR JOINT (END) (ONE), LH OR RH - R.R
5	SPRING SHOCK ABSORBER ASSEMBLY CHECK	All OK	Problems encountered	Operation
	Check: - the condition of the shock absorbers and the springs and that they are working efficiently - the fastenings of the spring/shock absorber assembly	Move on to Step 6	Tightening not correct	Renew the correct fastening
			Shock abosrbers not working properly	Replace the shock absorber involved Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R
			Springs not working properly	Replace the spring involved Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/REASSEMBLY OF ASSEMBLY AT BENCH - R.R
6	STEERING RODS AND ARMS CHECK	All OK	Problems encountered	Operation
	Check the condition of the steering rods and arms	Move on to Step 7	Rods damaged or worn	Replace the rods Op. 4110B10 STEERING LINKS - R+R ON VEHICLE - CHECK TOE-IN/TOE-OUT SEPARATELY
	Check the condition of the steering rods and arms	Move on to Step 7	Arms damaged or worn	Replace the steering box Op. 4130A15 POWER STEERING BOX R R WITH FRONT SUSPENSION FRAME REMOVED
7	INTERMEDIATE SHAFT DAMPER CHECK	All OK	Problems encountered	Operation
	Check that the intermediate shaft torsion damper is working properly	Move on to Step 8	Torsion damper not working properly	Replace the intermediate shaft
8	STEERING WHEEL ADJUSTMENT DEVICE CHECK	All OK	Problems encountered	Operation
	Check the condition of the steering wheel adjustment device In particular, check that the clearance between the device and the steering column is correct	Move on to Step 4	Coupling with excessive clearance	Restore the efficiency of the steering wheel adjustment device. If necessary, replace it
9	TIMING CHECK	All OK	Problems encountered	Operation
	Check that the engine timing is correct	Move on to Step 5	Timing not correct	Restore correct engine timing
10	FLYWHEEL BALANCING CHECK	All OK	Problems encountered	Operation
	Check that the flywheel is correctly balanced	End of diagnosis	Balancing not correct	Replace the flywheel Op. 1024B10 ENGINE FLYWHEEL - R + R FOR VERSIONS WITH MANUAL GEARBOX

‹ Prev Noise ' power assisted steering / with the steering wheel stationary Next › Climate control system noisy / (in the engine compartment)

Parts & tools for this job For 2005 Alfa Romeo 159

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