22 · Diagnostics

Seats creaking

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: Noisy / vibrations › Seats creaking

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Fault diagnosisSeats creaking

SEATS CREAKING

When the car is moving, especially on rough ground or during acceleration or braking, there is noise from one of the front doors

1	CHECKING GUARD AND CONTROL FASTENINGS	All OK	Problems met	Operation
		Results of the tests
	Check that the following are fixed correctly: Of guards; Of seat belt anchorage.	Continue to Step 2	Fault in front guard fastenings	Refasten correctly, and refit felt pads if necessary Op. 7045A43
			Fault in rear guard fastenings	Refasten correctly, and refit felt pads if necessary Op. 7045A44
			Seat belt fastening fault	Restore the correct fastening Op. 7065A12
			Noise noted during simulation	Eliminate the interference on the seat lift links
2	CHECK ON SEAT SLIDE DEVICE	All OK	Problems met	Operation
	Check the seat runners are properly fastened To the car floor pan To the actual seat. Also check the guide release bow is sliding efficiently Check the bow engagement notches	Continue to Step 3	Device fastening faulty	Reattach the seat runners correctly
			Sliding uneven	Replace the guides Op. 7045A71
			Bow deformation	Replace the deformed bow
			Engagement notches worn	Replace the guides Op. 7045A71
3	CHECKING SEAT LIFT DEVICE (driver's side only)	All OK	Problems met	Operation
	Check the seat lifting device In particular, check that the clearance is not excessive Also try to simulate movement during cornering to ensure no fouling is present. The seat will lift only it someone is sitting in it	Continue to Step 4	Clearance excessive	Replace the seat lift device and fastenings Op. 7045A45
		Continue to Step 4	Fouling	Move fouling parts apart
4	CHECK LUMBAR ADJUSTMENT DEVICE	All OK	Problems met	Operation
	Check the lumbar adjustment device In particular, check that the clearance is not excessive	Continue to Step 5	Clearance excessive	Change the lumbar adjustment device Op. 7045A38
5	CHECK SEAT SLIDE RELEASE LEVER	All OK	Problems met	Operation
	Check the release lever for longitudinal adjustment of the seat. In particular, check that the clearance is not excessive	Continue to Step 6	Clearance excessive	Replace the release lever Op. 7045A71
6	CHECK FOR FOULING BENEATH GUIDES	All OK	Problems met	Operation
	Remove seat Op. 7045A10and check for fouling against carpet or sound-proofing beneath the guides	Continue to Step 7	Fouling present	Remove the fouling and refit the seat correctly Op. 7045A10
7	CHECK LUMBAR ADJUSTMENT DEVICE	All OK	Problems met	Operation
	Remove part of seat upholstery Op. 7045A92 Verify: connection between Pullmaflex plate and frame; connection between adjustment cables and frame; regulation casing seal.	Continue to Step 8	Connections incorrect	Connect affected parts correctly
		Continue to Step 8	Rivetting incorrect	Replace instable rivets
8	CHECK CUSHION AND SQUAB FASTENINGS	All OK	Problems met	Operation
	Completely remove seat upholstery Op. 7045A92 Check that the following are fixed correctly: cushion module to sub-base squab beneath cushion sub-base	Continue to Step 9	Bolts loosened	Restore the correct fastening
9	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Replace the seat Op. 7045A10 Search for the fault starting from another symptom'

‹ Prev Front doors creaking Next › Seat belt noise

Parts & tools for this job For 2000 Alfa Romeo 147

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