23 · Diagnostics

Rear suspension noise (whistle/hum)

Make: Fiat
Model: Panda Factory Service Manual
Year: 2003–2012
Section: Noisy'' / vibrations › Rear suspension noise (whistle/hum)

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Fault diagnosisRear suspension noise (whistle/hum)

REAR SUSPENSION NOISE (WHISTLE/HUM)

ABS

Whilst driving, especially on unmade roads, there is a whistling noise coming from the rear suspension. This diagnosis can only be made after

See table S15 VEHICLE RUNNING NOISE

Carry out the latter first.

All versions

Whilst driving, especially on unmade roads, there is a whistling noise coming from the rear suspension. This diagnosis can only be made after

See table S15 VEHICLE RUNNING NOISE

Carry out the latter first.

ABS

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, during the See table S15 VEHICLE RUNNING NOISE , there was a whistling noise from the back. Continue depending on the circumstances in which the noise occurs.	End of diagnosis	The noise increases when cornering. The noise increases in vertical oscillation conditions.	Replace the wheel bearing on the side where the noise is loudest, positioning it with the magentic track towards the steering knuckle seeger (see warning below) Op. 4450C32 ONE FRONT WHEEL HUB BEARING, LH OR RH - REPLACE Move on to Step 1 This bearing is used by the ABS active sensors to calculate the wheel speed. It should NEVER come into contact with metal shavings because they could alter the gap and prevent a correct reading from the sensor
1	BRAKE DRUM CHECK	All OK	Problems encountered	Operation
	Remove the wheel Op. 4450B02 LEFT FRONT WHEEL R R Check the wear of the brake linings	Move on to Step 2	Brake linings worn	Brake lining replacement
2	SHOCK ABSORBER STEM CHECK	All OK	Problems encountered	Operation
	Check that the noise is not due to irregular friction between the shock absorber stem and the gasket, checking the condition of the stem chrome surface.	End of diagnosis	There is irregular friction	Lubricate the stem raising the dust cover with a layer of silicon grease. If the noise persists, replace the shock absorber Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/RE-BUILDING OF ASSEMBLY AT BENCH R R

All versions

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, during the See table S15 VEHICLE RUNNING NOISE , there was a whistling noise from the back. Continue depending on the circumstances in which the noise occurs.	End of diagnosis	The noise increases when cornering. The noise increases in vertical oscillation conditions.	Replace the wheel bearing on the side where the noise is loudest Move on to Step 1
1	BRAKE DRUM CHECK	All OK	Problems encountered	Operation
	Remove the wheel Op. 4450B02 LEFT FRONT WHEEL R R Check the wear of the brake linings	Move on to Step 2	Brake linings worn	Brake lining replacement
2	SHOCK ABSORBER STEM CHECK	All OK	Problems encountered	Operation
	Check that the noise is not due to irregular friction between the shock absorber stem and the gasket, checking the condition of the stem chrome surface.	End of diagnosis	There is irregular friction	Lubricate the stem raising the dust cover with a layer of silicon grease. If the noise persists, replace the shock absorber Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/RE-BUILDING OF ASSEMBLY AT BENCH R R

1.2 8v · 4X4

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, during the See table S15 VEHICLE RUNNING NOISE , there was a whistling noise from the back. Continue depending on the circumstances in which the noise occurs.	End of diagnosis	The noise increases when cornering. The noise increases in vertical oscillation conditions.	Replace the wheel bearing on the side where the noise is loudest Move on to Step 1
1	BRAKE DISC CHECK	All OK	Problems encountered	Operation
	Check that the gap between the brake disc and the steel shield is sufficient.	Move on to Step 2	Gap too small	Restore the correct gap.
2	SHOCK ABSORBER STEM CHECK	All OK	Problems encountered	Operation
	Removing the wheel Op. 4450B12 FRONT OR REAR WHEELS (TWO) - R+R Check that the noise is not due to irregular friction between the shock absorber stem and the gasket, checking the condition of the stem chrome surface.	End of diagnosis	There is irregular friction.	Lubricate the stem raising the dust cover with a layer of silicon grease. If the noise persists, replace the shock absorber Op. 4410A12 FRONT SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMANTLING/RE-BUILDING OF ASSEMBLY AT BENCH R R

‹ Prev Rear suspension noise (creak/squeak/ticking)Next › Rear suspension noise (knock)

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