Contents: Whistling noise ↧ Rumbling noise in steering gear ↧ Poor return of the steering wheel to… ↧ A short-term increase in force when… ↧ Jerks and jolts in the steering… ↧ Vibration in steering when turning… ↧ Excessive kickback in the steering… ↧ Heavy steering or insufficient power… ↧ Rack and pinion steering test bench ↧ Dismantling, installation and… ↧ Installation procedure ↧ Power steering with variable… ↧ The variable speed-sensitive power… ↧ The variable speed-sensitive power… ↧ General functioning ↧ System diagnostic check - Electric… ↧
Whistling noise
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Checks
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Operation, action
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Check that the intermediate shaft joints are not loose.
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Tighten the intermediate shaft joints.
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Make sure the power steering hose does not come into contact with other parts.
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Make sure the power steering hose is properly secured with clamps.
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Rumbling noise in steering gear
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Checks
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Operation, action
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Make sure the power steering hose does not come into contact with the vehicle body.
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Make sure the power steering hose is properly secured with clamps.
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Check if there is enough lubrication in the steering gear.
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Lubricate the steering gear.
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Make sure the steering gear is installed correctly.
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Tighten the nuts and bolts on the steering gear mounting bracket.
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Make sure the outer tie rods are installed correctly.
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Tighten the outer tie rod connections. Replace the outer tie rods.
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Poor return of the steering wheel to the center position
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Checks
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Operation, action
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Check the contact of the steering wheel with the turn signal housing.
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Adjust the position of the turn signal housing.
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Check that the intermediate shaft joints are not jammed or loose.
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Replace the intermediate shaft.
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Check the power steering pump flow valve for correct adjustment and for sticking.
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Replace the power steering pump.
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Check the wheel alignment angles.
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Adjust the wheel alignment angles.
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Check wheel bearings for wear and damage.
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Replace wheel bearings.
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Check the correct installation of the intermediate shaft joints.
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Adjust the intermediate shaft between the steering gear and the steering column. Replace the intermediate shaft.
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Check that the outer tie rods and joints are not sticking or loose.
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Tighten the tie rods and ball joints. Replace the tie rods and ball joints.
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Check the steering adjustment.
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Check the straight-ahead position of the steering wheels.
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Check that there is no friction between the steering column shaft seal and the shaft.
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Replace the front panel seal.
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Check that the steering shaft bearings are not seized.
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Replace the pivot shaft bearings.
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A short-term increase in force when turning the wheel quickly
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Checks
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Operation, action
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Check for internal leaks in the power steering pump.
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Replace the power steering pump.
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Make sure that there are no damages or pinches in the hoses.
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Replace power steering hoses and/or pipes.
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Check the power steering fluid level.
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Fill the power steering fluid reservoir.
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Check the power steering pump flow valve for proper operation and absence of sticking.
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Replace the power steering pump.
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Jerks and jolts in the steering wheel when turning with the engine running.
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Checks
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Operation, action
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Check if the power steering pump is producing sufficient pressure.
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Replace the power steering pump.
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Check the power steering pump flow valve for proper operation and absence of sticking.
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Replace the power steering pump.
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Check that the power steering pump drive belt does not slip.
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Tighten the power steering drive belt.
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Check for air in the power steering system.
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Bleed the power steering system.
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Vibration in steering when turning at low speed or standing still
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Checks
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Operation, action
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Check for air in the power steering system.
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Bleed the power steering system.
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Check the tension of the power steering pump drive belt.
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Tighten the power steering drive belt.
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Excessive kickback in the steering wheel or large play
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Checks
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Operation, action
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Check for air in the power steering system.
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Bleed the power steering system.
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Check wheel bearings for wear and damage.
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Replace wheel bearings.
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Make sure the steering gear is installed correctly.
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Tighten the nuts and bolts on the steering gear mounting bracket.
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Check the correct installation of the intermediate shaft joints.
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Adjust the intermediate shaft between the steering gear and the steering column. Replace the intermediate shaft.
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Check the tightness of the outer tie rods and ball joints.
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Tighten the tie rods and ball joints. Replace the tie rods and ball joints.
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Heavy steering or insufficient power (especially when parking)
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Checks
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Operation, action
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Check the correct installation of the intermediate shaft joints.
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Adjust the intermediate shaft between the steering gear and the steering column. Replace the connecting flange.
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Check that the power steering pump flow valve is installed correctly and that it is not jammed.
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Replace the power steering pump.
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Check if the power steering pump is producing sufficient pressure.
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Replace the power steering pump.
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Check for internal leaks in the power steering pump.
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Replace the power steering pump.
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Check that the intermediate shaft is not loose or worn.
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Tighten the intermediate shaft. Replace the intermediate shaft if necessary.
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Check the tension of the power steering pump drive belt.
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Tighten the power steering drive belt.
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Rack and pinion steering test bench
Dismantling, installation and testing procedure
Note: This setting can also be used to check pressure and flow values.
1. Disconnect and remove the power steering gear. See "Rack and pinion steering assembly" in this section.
2. Place the power steering gear on a stand next to the vehicle.
3. Disconnect the high pressure pipe where the hose connects to the pipe. Extend this pipe to reach the power steering gear on the bench.
4. Disconnect the return line from the power steering fluid reservoir. Extend this line to reach the power steering gear on the bench.
5. Connect the steering pipes to the power steering gear.
6. Start the engine and let it idle for 10 seconds.
7. Check the power steering fluid level. See section 6A, "Power Steering System".
8. Start the engine and rotate the rack and pinion shaft a full revolution in each direction. Hold the shaft on each stop for 5 seconds.
9. Inspect for possible leaks. See section 6A, "Power Steering System".
Installation procedure
1. Turn off the engine.
2. Disconnect the power steering pipes from the steering gear.
3. Remove the extensions and reattach the high pressure and return tubes.
4. Install and connect the power steering gear. See "Rack and pinion steering assembly" in this section.
5. Start the engine and let it idle for 10 seconds.
6. Check the power steering fluid level. See section 6A, "Power Steering System".
Power steering with variable assistance depending on speed
The variable speed-sensitive power steering system operates at maximum assistance at all times
| Step | Operation | Values | Yes | No |
| 1 |
Perform a basic inspection of the power steering system.
Is the system functioning?
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-
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Go to Step 2
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| 2 |
Are there any trouble codes displayed on the scan tool?
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Go to the "List of Fault Codes (DTCs)" section
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Go to Step 3
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| 3 |
Check for poor contact on the ABS controller.
Was the cause of the problem found and corrected?
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-
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-
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Go to Step 4
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| 4 |
Is the resistance approximately 0?
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≈ 0 Ohm
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Go to Step 5
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Go to Step 6
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| 5 |
Replace or repair damaged wiring.
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-
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| 6 |
Replace the SSPS controller.
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The variable speed-sensitive power steering system operates at reduced power assistance at all times
| Step | Operation | Values | Yes | No |
| 1 |
Check the controller for an open or short to voltage in the vehicle speed signal circuit.
Was the cause of the problem found and corrected?
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-
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The system is working properly
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Go to Step 2
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| 2 |
Disconnect the SSPS electromagnetic actuator from the steering gear.
The symptom of the malfunction is not eliminated?
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Go to Step 3
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| 3 |
Replace the SSPS controller.
Is the renovation finished?
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The system is working properly
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General functioning
When the ignition is turned on, the indicator lamp flashes three times for 3 seconds and then goes out. The SSPS controller is equipped with a self-diagnosis function. If any malfunction occurs, the controller lights the indicator lamp and cuts off the current to the electromagnet winding, which leads to a heavier steering for safety. Malfunction codes are displayed and cleared using a diagnostic tool.
System diagnostic check - Electric power steering with variable gain depending on speed
| Step | Operation | Values | Yes | No |
| 1 |
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Go to Step 2
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| 2 |
Select the SSPS DTC display function on the scan tool.
Are there any trouble codes displayed on the scan tool?
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Go to section "List of diagnostic trouble codes (DTC)"
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Go to section "Signs of Fault - Power Steering System"
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[The original material is located on the website chevyman.ru]