22 · Diagnostics

Forecarriage transverse vibrations

Make: Fiat
Model: 500 Factory Service Manual
Year: 2007–2024
Section: Noise / vibrations › Forecarriage transverse vibrations

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Fault diagnosisForecarriage transverse vibrations

FORECARRIAGE TRANSVERSE VIBRATIONS

1.2 8v, 1.3 Multijet, 1.4 16v

Whilst driving, especially on unmade roads, there are transverse vibrations at the front section. This diagnosis can only be made after

See table S015 NOISE WHILST DRIVING

Carry out the latter first.

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Having carried out the road test, during the See table S015 NOISE WHILST DRIVING , transverse vibrations are felt from the front end. Continue according to the circumstances in which the vibration occurs	End of diagnosis	1. The vibration is noticeable during take off and release. 2. The vibration is accompanied by noise which increases with speed. 3. The vibration is accompanied by noise over unmade roads.	1. Move on to Step 5 2. Move on to Step 2 3. Move on to Step 1
1	WHEEL SIDE CONSTANT VELOCITY JOINT CHECK	All OK	Problems encountered	Operation
	Raise the vehicle on a two column lift and check: that the half-axle/wheel-side joint matching is correct; that the o-ring is present.	Move on to Step 2	1. Incorrect matching. 2. Sealing ring missing.	1. Replace the constant velocity joint and the half-axle Op. 2710A10 DRIVESHAFT WITH JOINTS (ONE), L/H OR R/H - R + R 2. Replace the constant velocity joint and the half-axle Op. 2710A10 DRIVESHAFT WITH JOINTS (ONE), L/H OR R/H - R + R
2	WHEEL SIDE JOINT CLEARANCE CHECK	All OK	Problems encountered	Operation
	Check that the clearance for the wheel side constant velocity joint is not too great.	Move on to Step 3	Excessive clearance compared with the opposite wheel side joint.	Replace the wheel side constant velocity joint Op. 2710A20 WHEEL SIDE CONSTANT VELOCITY JOINT (ONE), L/H OR R/H - R + R WITH DRIVESHAFT REMOVED - INCLUDES BOOT REPLACEMENT and carry out the correct greasing.
3	WHEEL SIDE JOINT SEIZING CHECK	All OK	Problems encountered	Operation
	Rotate the wheel by hand and check that there is no seizing of the wheel side constant velocity joint.	Move on to Step 4	There is seizing of the wheel side joint.	Replace the constant velocity joint Op. 2710A20 WHEEL SIDE CONSTANT VELOCITY JOINT (ONE), L/H OR R/H - R + R WITH DRIVESHAFT REMOVED - INCLUDES BOOT REPLACEMENT and carry out the correct greasing.
4	WHEEL SIDE JOINT TIGHTENING CHECK	All OK	Problems encountered	Operation
	Remove the left and/or right wheel. Check that the constant velocity joint fastening nut is tightened and that the staking is in place.	Move on to Step 5	Nut loosening	Replace the nut, restore the torque tightening and then stake Op. 4450C32
5	CLUTCH PLATE CHECK	All OK	Problems encountered	Operation
	Check that there is no irregular wear on the surface of the clutch plate.	Move on to Step 6	Surface of the clutch plate worn unevenly.	Replace the assembly. Op. 1810A20 CLUTCH - R + R
6	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present.	End of diagnosis	The fault persists.	The fault is due to another system (engine, gearbox, differential, suspension). Search for the cause in one of these systems, following the appropriate diagnostic procedures.

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Parts & tools for this job For 2007 Fiat 500

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