12 · Diagnostics

S41 Front noise driving on rough road

DiagnosisS41 Front noise driving on rough road · page 1 of 3

When the car is running on rough roads or very bending roads, front noise is heard.

Preliminarily check:
– correct wheel fastening
– correct brake caliper fastening

Step	Validity	Operation to be performed	Test results
Step	Validity	Operation to be performed	OK	⚠	🔧
1	CHECK TYPE OF NOISE Run a road test on a rough or very bending road to identify the type of noise		All OK End of test	Problems found	Intervention
			All OK End of test	Noise identified: squeak/creak	Go to Step 2
			Noise identified: whistle/blow	Go to Step 5
			Noise identified: whistle/blow	Go to Step 5	Noise identified: knock	Go to Step 7
2	CHECK SUSPENSION COMPONENT Check for signs of scraping on front suspension components: – between suspension arm bushes and washers – between dust guard and shock absorber – between rebound buffer and its housing		All OK Go to Step 3	Problems found	Intervention
2			All OK Go to Step 3	Signs of scraping	Lubricate or replace parts PROCEDURE 4410A e 4410B
3	1108	Check intactness and correct fastening of stabiliser bar pads	All OK Go to Step 4	Problems found Worn or incorrectly fastened stabiliser bar pads	Intervention Restore, lubricate or replace pads PROCEDURE OP. 4410C10
3			All OK Go to Step 4
4	CHECK ENGINE COMPARTMENT FASTENINGS Check correct position and fastening of pipes and guards in engine compartment		All OK Go to Step 8	Problems found Parts incorrectly connected causing interference	Intervention Fasten pipes or guards correctly
4			All OK Go to Step 8		Intervention Fasten pipes or guards correctly

(Cont..)

Parts & tools for this job For 1998 Fiat Seicento

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