Noise '' power assisted steering / end of travel

Make: Fiat
Model: Croma Factory Service Manual
Year: 2005–2010
Section: Noise / vibrations › Noise '' power assisted steering / end of travel

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Fault diagnosisNoise '' power assisted steering / end of travel

NOISE '' POWER ASSISTED STEERING / END OF TRAVEL

Whilst the steering is operated there is a noise when it reaches the end of travel position.

0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Visually inspect the power assisted steering fluid in the reservoir. Conduct a test by steering fully to one side and then releasing the steering wheel.	Move on to Step 1	1. Fluid level too low.	1. Restore the correct level
			2. The noise increases towards the end of travel position and with the engine speed (roar)	2. Move on to Step 1
			3. The noise remains constant (hissing whilst steering, puffing on release)	3. No intervention is nececssary: the noise is due to the by-pass valve that discharges the excess pressure
1	CHECK ON POWER ASSISTED STEERING FLUID QUALITY	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Visually inspect the power assisted steering fluid in the reservoir. Make sure that there is no emulsified fluid (fluid that is lighter in colour with bubbles)	Move on to Step 2	Emulsified fluid.	Remove any air infiltrations from the power steering system pipes or replace the power steering reservoir Op. 4130B25 POWER STEERING PUMP ASSEMBLY R R FOR VERSIONS WITH AIR CONDITIONER
2	POWER ASSISTED STEERING PIPES CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check for constrictions in the flexible and rigid system pipes.	Move on to Step 3	Pipes faulty.	Replace the damaged parts, replacing all the seals Op. 4130B POWER STEERING HYDRAULIC SYTEM
3	CHECK CORRECT OPERATION OF MPU (Motor Pump Unit)	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the MPU is working properly See Test 4110DC ELECTRIC PUMP CHECK	End of diagnosis	MPU malfunction	Replace MPU Op. 4130B25 POWER STEERING PUMP ASSEMBLY R R FOR VERSIONS WITH AIR CONDITIONER

‹ Prev Steering wheel and brake pedal vibrations Next › Noise '' power assisted steering / with the steering wheel stationary

Parts & tools for this job For 2005 Fiat Croma

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