Table 2-3 (Continued 3)
Fault Possible Cause Actions
Swish noise
Oil at a temperature below 54°C
(130°F) flow into the bypass
valve of the housing of pump
valve.
Normal.
With air in the oil and leakage in
the system.
Purify the air in the system.
Sob noise
Check O-ring oil seal of one-way
valve cap.
Install a new power steering pump if
necessary.
Too much oil. Correct the fluid level height if necessary.
Lost, loose or broken filler cap or
lost O-ring seal.
Install a new filler cap or O-ring seal if
necessary.
Loose or broken hose connector. Install a new hose connector if necessary.
Leakage in shaft seal:
Broken oil seal.
Broken rotor shaft, e.g. groove or
bruise.
Worn bush or sleeve of shaft.
Install a new power steering pump.
Inlet tube. Install a new power steering pump.
Perforated housing. Install a new power steering pump.
Loose nuts of outlet pipe
connector or plug valve.
Lock it if necessary.
Leakage in power steering
pump or fuel tank
Broken connector, nuts or plug of
outlet pipe.
Install a new power steering pump.
Power steering oil (insufficient).
Refill the oil if necessary and check if the
system has a leakage.
Universal joint (worn). Replace it if necessary.
Power steering vane pump
(faulty).
Check and replace it if necessary.
Abnormal noise
Steering gear (faulty). Replace it if necessary.
Tire (improper inflation). Adjust the tire pressure.
Front wheel alignment
(incorrect).
Align the wheels.
Steering column (bent). Align it and replace it if necessary.
Insufficient return
Steering gear (malfunction). Replace it if necessary.
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