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Fiat Grande Punto Factory Service Manual (2005-2012)22 · Fault diagnosis
22 · Diagnostics

Poor driving comfort - at rear

Make
Fiat
Model
Grande Punto Factory Service Manual
Year
2005–2012
Section
Steering – vehicle behaviour › Poor driving comfort - at rear
Fault diagnosisPoor driving comfort - at rear

POOR DRIVING COMFORT - AT REAR

Results of the tests
1ROAD TEST TO EVALUATE THE DRIVING COMFORTAll OKProblems encounteredOperation

Carry out a road test to evaluate the driving comfort of the rear suspension

See Test 44A ROAD TEST FOR COMFORT EVALUATION

End of diagnosis

1. Subjective judgement compared with the reference vehicle 6

2. Subjective judgement compared with the reference vehicle 5.5

3. Subjective judgement compared with the reference vehicle 3-4

1. Acceptable behaviour of the vehicle

2. Move on to Step 2

3. Move on to Step 3

2END OF TRAVEL BUFFER CHECKAll OKProblems encounteredOperation

Check that the end of travel buffer for the rear spring is not faulty

See Test 4420AA CHECK ON REAR SUSPENSION SPRING END OF TRAVEL BUFFER

Move on to Step 3End of travel buffer deterioratedReplace the end of travel buffer
3SHOCK ABSORBER EFFICIENCY CHECKAll OKProblems encounteredOperation
Check the efficiency of the shock absorbers by carrying out manual compression manoeuvres (resting on the wheel arch by the centre of the wheel), which should be carried out on both sides of the vehicle.Move on to Step 4Sudden return without damping

Replace the shock absorber that is not working properly

Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY

4VEHICLE GEOMETRY CHECKAll OKProblems encounteredOperation
After replacing the shock absorbers, check the geometryEnd of diagnosisGeometry values do not conform

Restore the geometry to the correct values

Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY

Parts & tools for this job For 2005 Fiat Grande Punto

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