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Alfa Romeo GT Factory Service Manual (2003-2010)22 · Fault diagnosis

22 · Diagnostics

Vehicle drift

Make: Alfa Romeo
Model: GT Factory Service Manual
Year: 2003–2010
Section: Steering – vehicle behaviour › Vehicle drift

‹ Prev No acoustic warning for handbrake applied with vehicle moving Next › Drift whilst braking

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
	Check: 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 Op. 4450B24 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 ON 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. Op. 4450A10 FRONT WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT - INCLUDES FRONT WHEEL TOW-IN ADJUSTMENT IF NECESSARY
	Check the front and rear wheel geometry	Continue to Step 2	Incorrect rear geometry	Restore the correct rear wheel geometry Op. Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT
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	End of diagnosis	The car drifts	Swap over the front wheels and move on 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	End of diagnosis	The drift has changed direction	Replace the tyres Op. 4450B24 Continue to Step 4
		End of diagnosis	The car continues to drift in the same direction	Swap over the front/rear wheels on the same side and move on 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. Op. 2110D10 DIFFERENTIAL INNER CASE - R + R WITH MANUAL GEARBOX REMOVED - INCLUDES GEARBOX DISMANTLE AND REBUILD
5	Continue as instructed by the tester	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

‹ Prev No acoustic warning for handbrake applied with vehicle moving Next › Drift whilst braking

Parts & tools for this job For 2003 Alfa Romeo GT

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