Jeep Cherokee 2000 Service Manual - page 1266
DIAGNOSIS AND TESTING
POWER STEERING SYSTEM DIAGNOSIS CHARTS
STEERING NOISE
There is some noise in all power steering systems. One of the most common is a hissing sound evident at a
standstill parking. Or when the steering wheel is at the end of it’s travel. Hiss is a high frequency noise similar
to that of a water tap being closed slowly. The noise is present in all valves that have a high velocity fluid passing
through an orifice. There is no relationship between this noise and steering performance.
CONDITION
POSSIBLE CAUSES
CORRECTION
OBJECTIONAL HISS OR
WHISTLE
1. Steering intermediate shaft to dash panel
seal.
1. Check and repair seal at dash
panel.
2. Noisy valve in power steering gear.
2. Replace steering gear.
RATTLE OR CLUNK
1. Gear mounting bolts loose.
1. Tighten bolts to specification.
2. Loose or damaged suspension
components/track bar.
2. Inspect and repair suspension.
3. Loose or damaged steering linkage.
3. Inspect and repair steering
linkage.
4. Internal gear noise.
4. Replace gear.
5. Pressure hose in contact with other
components.
5. Reposition hose.
CHIRP OR SQUEAL
1. Loose belt.
1. Adjust or replace.
WHINE OR GROWL
1. Low fluid level.
1. Fill to proper level.
2. Pressure hose in contact with other
components.
2. Reposition hose.
3. Internal pump noise.
3. Replace pump.
4. Air in the system.
4. Perform pump initial operation.
SUCKING AIR SOUND
1. Loose return line clamp.
1. Replace clamp.
2. O-ring missing or damaged on hose
fitting.
2. Replace o-ring.
3. Low fluid level.
3. Fill to proper level.
4. Air leak between pump and reservoir.
4. Repair as necessary.
SCRUBBING OR
KNOCKING
1. Wrong tire size.
1. Verify tire size.
2. Wrong gear.
2. Verify gear.
19 - 2
STEERING
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