23 · Diagnostics

Front suspension noise (whistle/hum)

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

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Fault diagnosisFront suspension noise (whistle/hum)

FRONT SUSPENSION NOISE (WHISTLE/HUM)

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

Vedere tabella S15 RUMOROSITA'' IN CONDIZIONI DI MARCIA

Carry out the latter first.

ABS

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

Vedere tabella S15 RUMOROSITA'' IN CONDIZIONI DI MARCIA

Carry out the latter first.

All versions

If the problem is only on one side, carry out the checks and any operations on the appropriate side only.

ABS

If the problem is only on one side, carry out the checks and any operations on the appropriate side only.

All versions

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, during the Vedere tabella S15 RUMOROSITA IN CONDIZIONI DI MARCIA , there was a whistling noise from the front. 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
2	SHOCK ABSORBER STEM CHECK	All OK	Problems encountered	Operation
	Remove the wheel Op. 4450B02 LEFT FRONT WHEEL 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

PRELIMINARY CHECKS

All OK

Problems encountered

Operation

Having carried out the road test, during the

Vedere tabella S15 RUMOROSITA IN CONDIZIONI DI MARCIA

, there was a whistling noise from the front.

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

SHOCK ABSORBER STEM CHECK

All OK

Problems encountered

Operation

Remove the wheel

Op. 4450B02 LEFT FRONT WHEEL 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

ABS

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	Having carried out the road test, during the Vedere tabella S15 RUMOROSITA IN CONDIZIONI DI MARCIA , there was a whistling noise from the front. 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 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
	Remove the wheel Op. 4450B02 LEFT FRONT WHEEL 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 Front suspension noise (creak/squeak)Next › Front suspension noise (knock)

Parts & tools for this job For 2003 Fiat Panda

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