Workshop Manuals Factory service & repair

Alfa Romeo 147 Factory Service Manual (2000-2004)22 · Fault diagnosis

22 · Diagnostics

Vehicle drift

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: STEERING – vehicle behaviour › Vehicle drift

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Fault diagnosisVehicle drift

VEHICLE DRIFT

Whilst driving in a straight line, the vehicle tends to drift towards the right and/or the left.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Verify: tyre condition and pressures; free rotation of wheels; visually inspect the underbody to check for dents or bent suspension components condition of the suspension flexible mountings condition of the steering components	Continue to Step 1	Abnormal tyre wear	Replace the tyres and carry out balancing
			Wheels braked	Check the condition of the bearings, hubs and calipers If necessary, replace the parts concerned
			Deformations are present	Replacing the parts concerned
			Damaged mountings	Replacing the parts concerned
			Damaged components	Replacing the parts concerned
1	CHECK WHEEL GEOMETRY	All OK	Problems met	Operation
	Check the front and rear wheel geometry	Continue to Step 2	Incorrect front geometry	Restore the correct front wheel geometry Op. 4450A10
	Check the front and rear wheel geometry	Continue to Step 2	Incorrect rear geometry	Restore the correct front wheel geometry Op. 4450A40
2	CHECK ON DRIFT	All OK	Problems met	Operation
	Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift		The car drifts	Swap over the front wheels Continue to Step 3
3	CHECK ON DRIFT	All OK	Problems met	Operation
	Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift		The drift has changed direction	Replace the tyres Continue to Step 4
			The car continues to drift in the same direction	Swap over the front/rear wheels on the same side Continue to Step 4
4	CHECK ON DRIFT	All OK	Problems met	Operation
	Test the vehicle on a straight line, on a good road surface and with no wind and check that there is no drift	Continue to Step 5	The vehicle still drifts	Overhaul the differential unit Op. 2110D10
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

‹ Prev Handbrake locked Next › Drift whilst braking

Parts & tools for this job For 2000 Alfa Romeo 147

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