CONDITION POSSIBLE CAUSES CORRECTION
4. Loose power steering pump drive
belt.
4. Check and adjust power steering
pump drive belt to specifications.
Replace belt if worn or glazed.
5. Extremely cold temperatures
below -18°C (0°F).
5. Noise is typical when starting vehicle
in extremely cold temperature. Normal
duration of noise at start-up is less than
one minute. If noise persists for
extended time, verify proper fluid level.
If fluid is low, inspect for leaks.
SUCKING AIR SOUND 1. Loose clamp on power steering
fluid return hose.
1. Tighten or replace hose clamp.
2. Missing O-Ring on power steering
hose connection.
2. Inspect connection and replace
O-Ring as required.
3. Low power steering fluid level. 3. Fill power steering fluid reservoir to
proper level and check for leaks.
4. Air leak between power steering
fluid reservoir and power steering
pump.
4. Replace power steering pump (with
reservoir).
SQUEAK OR RUBBING
SOUND
1. Steering column shroud rubbing. 1. Realign shrouds as necessary.
2. Steering column shaft rubbing. 2. Move or realign item rubbing shaft.
3. Clockspring noisy. 3. Remove clockspring. Reinstall wheel.
If noise is gone, replace clockspring.
4. Steering gear internally noisy. 4. Replace steering gear.
SCRUBBING OR
KNOCKING NOISE.
1. Incorrect tire or wheel size. 1. Replace incorrect size tire or wheel
with size used as original equipment.
2. Interference between steering
gear and other vehicle components.
2. Check for bent or misaligned
components and correct as necessary.
3. Steering gear internal stops worn
excessively allowing tires to be
steered excessively far.
3. Replace steering gear.
*NOTE: There is some noise in all power steering systems. One of the most common is a hissing sound
evident when turning the steering wheel when at a standstill or when parking and the steering wheel is at
the end of its travel. Hiss is a very high frequency noise similar to that experienced while slowly closing a
water tap. The noise is present in every valve and results when high velocity fluid passes valve orifice
edges. There is no relationship between this noise and the performance of the steering system.
**NOTE: Power steering pump growl results from the development of high pressure fluid flow. Normally this
noise level should not be high enough to be objectionable.
19 - 4 STEERING LH
DIAGNOSIS AND TESTING (Continued)
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