2888361 - H01 VEHICLE DRIFT

Whilst driving in a straight line, the vehicle tends to drift towards the right and/or the left.If necessary, carry out a test on a straight, flat road with no cambers to check how much the car veers to one side.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Preliminarily, check the type, condition and inflation pressure of the tyresCheck that the tyres are correctly fitted and that the wheels are correctly fixedContinue to Step 1Tyre inflation pressure not correctRestore the tyre inflation pressures
Tyres not suitable or wornReplace the tyres
Fitting tyresSwap the two front wheels
Wheel fixing not correctTighten the wheels correctly Op.   4450B14 
1WHEEL CHECKAll OKProblems metOperation

Check:

  • that the wheels are properly balanced
  • that the wheels rotate freely (calipers/shoes fitted correctly)
Continue to Step 2Wheels not balancedBalance the wheels Op. 4450B41
Front calipers incorrectly fittedRestore the correct fitting or replace the brake calipers Op.   3310A30 
Rear shoes incorrectly fittedRefit the cylinders correctly or replace them Op.   3320B20 
2FRONT WHEEL GEOMETRY CHECKAll OKProblems metOperation
Check the front wheel geometry and angles, Op.   4450A10  Continue to Step 3Geometry not correctCheck and, if necessary, replace the damper Op.   4410A12 
Angles not correctRestore, where possible, the correct angles
3CHECK REAR WHEEL GEOMETRYAll OKProblems metOperation
Check the rear wheel geometry and angles Op.   4450A40  Continue to Step 4Geometry not correctCheck and, if necessary, replace the damper Op.   4420A30 
Geometry not correctCheck the spring and replace if necessary Op.   4420A48 
Angles not correctRestore, where possible, the correct angles
4WHEEL BEARINGS CHECKAll OKProblems metOperation
Check the condition and operation of the wheel hub bearings Continue to Step 5Front wheel bearing worn or damagedReplace the wheel hub bearing Op.   4450C32 
Rear wheel bearing worn or damagedReplace the wheel hub bearing Op.   4450D13 
5FLEXIBLE MOUNTINGS AND BUSHES, FRONT AREA, CHECKAll OKProblems metOperation

Check that there are no accidental blows or damage to:

  • steering box rods
  • wishbone flexible mounts
  • anti-roll bar flexible mountings
Continue to Step 6Steering box rods worn or damagedReplace the rods Op.   4110B10 
Arm supports worn or damagedReplace the mounts Op.   4410B40 
Anti-roll bar mountings worn or damagedReplace the mountings Op.   4410C10 
6ENGINE SUPPORT CHECKAll OKProblems metOperation
Check the condition of the engine supports and reaction rodContinue to Step 7Engine supports faultyBed in the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008A)
Reaction rod faultyBed in the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008C)
7UNDERBODY CHECKAll OKProblems metOperation
Visually inspect the underbodyCheck that there are no accidental blows, dents or bent suspension armsContinue to Step 8Damage, in particular to the front suspensionRestore or replace the damaged components
8DIFFERENTIAL CHECKAll OKProblems metOperation
Check the condition of the differential: in particular make sure that there are no clearancesContinue to Step 9Differential operation faultyOverhaul or replace the differential (see Assembly 2110D)
9CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persistsSearch for the fault starting from another symptom'