Opel Frontera UBS. Service manual — part 941

00 – 2 SERVICE INFORMATION

MEMO

SERVICE INFORMATION 00 – 3

TROUBLESHOOTING

CONTENTS

PAGE

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . 00 – 4

General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 00 – 4

Power Steering System . . . . . . . . . . . . . . . . . . . . . . . . .. 00 – 7

Power Steering Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 00 – 8

Steering Column . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 00 – 9

Problem

Possible Cause

Correction

00 – 4 SERVICE INFORMATION

GENERAL INFORMATION

Since the problems in steering, suspension,
wheels and tires involve several systems, they
must all be considered when diagnosing a
complaint. To identify the symptom, always road
test the vehicle first.
Proceed with the following preliminary inspections
and correct any defects which are found.

1.

Inspect tires for proper pressure and uneven
wear.

2.

Raise vehicle on a hoist and inspect front and
rear suspension and steering linkage for loose
or damaged parts.

3.

Spin front wheels. Inspect for out-of-round
tires, out-of-balance tires, loose and/or rough
wheel bearings.

GENERAL TROUBLESHOOTING

Vehicle Pulls

Abnormal or Excessive
Tire Wear

Shimmy, Shake or
Vibration

1. Mismatched or uneven tires.
2. Tires not adequately inflated.
3. Broken or sagging springs.
4. Radial tire lateral force.
5. Improper wheel alignment.
6. Brake dragging in one wheel.
7. Loose, bent or broken front or rear

suspension parts.

8. Faulty shock absorbers.

1. Sagging or broken spring.
2. Tire out of balance.
3. Improper wheel alignment.
4. Faulty shock absorber.
5. Hard driving.
6. Overloaded vehicle.
7. Tires not rotated periodically.
8. Worn or loose road wheel bearings.
9. Wobbly wheel or tires.

10. Tires not adequately inflated.

1. Tire or wheel out of balance.

2. Loose wheel bearings.
3. Worn steering linkage ball joints.
4. Worn upper or lower end ball joints.
5. Excessively upper wheel runout.

6. Blister or bump on tire.
7. Excessive loaded radial run out of

tire/wheel assembly.

8. Improper wheel alignment.
9. Loose or worn steering linkage.

10. Loose steering gear.
11. Tires not adequately inflated.
12. Loose, bent or broken front or rear

suspension parts.

13. Faulty shock absorber.
14. Hub bearing preload misadjustment.

Replace tire.
Adjust tire pressure.
Replace spring.
Replace tire.
Adjust wheel alignment.
Repair brake.
Tighten or replace the
appropriate suspension part(s).
Replace shock absorber.

Replace spring.
Balance or replace tire.
Check front end alignment.
Replace shock absorber.
Replace tire.
Replace tire and reduce load.
Replace or rotate tire.
Replace wheel bearing.
Replace wheel or tire.
Adjust the pressure.

Balance wheels or replace
tire/or wheel.
Replace wheel bearing.
Replace ball joints.
Replace ball joints.
Repair or replace wheel
and/or tire.
Replace tire.
Replace tire or wheel.

Check wheel alignment.
Tighten or replace steering
linkage.
Tighten housing bolts.
Adjust tire pressure.
Tighten or replace the
appropriate suspension parts.
Replace shock absorber.
Adjust preload.

SERVICE INFORMATION 00 – 5

Problem

Possible Cause

Correction

GENERAL TROUBLESHOOTING (CONT.)

Wheel Tramp or Hop

Hard Steering

Too Much Play In
Steering

Poor Steering Wheel
Returnability

Abnormal Noise

1. Blister or bump on tire.
2. Improper shock absorber operation

1. Bind in steering linkage ball studs,

upper or lower end ball joint.

2. Improper wheel alignment.
3. Steering gear misadjustment.

4. Tire not adequately inflated.

5. Bind in steering column or shaft.
6. Improper power steering system

operation.

1. Wheel bearings worn.
2. Loose steering gear or linkage.
3. Steering gear misadjustment.

4. Worn or loose steering shaft universal

joint.

5. Worn steering linkage ball joints.
6. Worn upper or lower end ball joints.

1. Bind in steering linkage ball joints.
2. Bind in upper or lower end ball joints.
3. Bind in steering column and shaft.
4. Bind in steering gear.
5. Improper wheel alignment.
6. Tires not adequately inflated.
7. Loose steering wheel nut.
8. Worn wheel bearing.

1. Worn, sticky or loose upper or lower

end ball joint, steering linkage ball
joints or drive axle joints.

2. Faulty shock absorbers.
3. Worn upper or lower control arm bushing.
4. Loose stabilizer bar.
5. Loose wheel nuts.

6. Loose suspension bolts or nuts.

7. Broken or otherwise damaged wheel

bearings.

8. Broken suspension springs.
9. Loose steering gear.

10. Faulty steering gear.

Replace tire.
Replace shock absorber.

Replace ball joints.

Check wheel alignment.
Check and adjust steering gear
preload.
Inflate tires to proper pressure.
Repair or replace.
Repair or replace.
Refer to "Power steering
system troubleshooting."

Replace wheel bearings.
Retighten or repair.
Inspect and adjust steering
gear preload.
Retighten or replace steering
shaft.
Replace ball joints.
Replace ball joints.

Replace ball joints.
Replace ball joints.
Repair or replace.
Check and repair steering gear.
Adjust wheel alignment.
Adjust tire pressure.
Retighten.
Replace.

Replace.

Replace or repair.
Replace.
Retighten bolts.
Tighten nuts. Check for
elongated wheel nut holes.
Replace wheel if required.
Retighten suspension bolts or
nuts.
Replace wheel bearing.

Replace spring.
Retighten mounting bolt.
Check and adjust steering gear.