Kia Optima: Troubleshooting - General Information - Suspension System - Kia Optima TF 2011-2018 Service ManualKia Optima: Troubleshooting

Troubleshooting

Symptom
Possible cause
Remedy
Hard steering
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Low tire pressure
No power assist
Correct
Replace

Adjust
Repair and replace
Poor return of steering wheel to center
Improper front wheel alignment
Correct
Poor or rough ride
Improper front wheel alignment
Malfunctioning shock absorber
Broken or worn stabilizer
Broken or worn coil spring
Worn lower arm bushing
Correct
Repair or replace
Replace
Replace
Replace the lower arm assembly
Abnormal tire wear
Improper front wheel alignment
Improper tire pressure
Malfunctioning shock absorber
Correct
Adjust
Replace
Wandering
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Loose or worn lower arm bushing
Correct
Repair

Retighten or replace
Vehicle pulls to one side
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Broken or worn coil spring
Bent lower arm
Correct
Replace

Replace
Repair
Steering wheel shimmy
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Broken or worn stabilizer
Worn lower arm bushing
Malfunctioning shock absorber
Broken or worn coil spring
Correct
Replace

Replace
Replace
Replace
Replace
Bottoming
Broken or worn coil spring
Malfunctioning shock absorber
Replace
Replace

Wheel /tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or decelerating. Also, out-of-balance wheel and tires can vibrate at more than one speed. A vibration that is affected by the engine rpm, or is eliminated by placing the transmission in Neutral is not related to the tire and wheel. As a general rule, tire and wheel vibrations felt in the steering wheel are related to the front tire and wheel assemblies. Vibrations felt in the seat or floor are related to the rear tire and wheel assemblies. This can initially isolate a concern to the front or rear.

Careful attention must be paid to the tire and wheels. There are several symptoms that can be caused by damaged or worn tire and wheels. Perform a careful visual inspection of the tires and wheel assemblies. Spin the tires slowly and watch for signs of lateral or radial runout. Refer to the tire wear chart to determine the tire wear conditions and actions
Wheel and tire diagnosis
Rapid wear at the center
Rapid wear at both shoulders
Wear at one shoulder

Center-tread down to fabric due to excessive over inflated tires
Lack of rotation
Excessive toe on drive wheels
Heavy acceleration on drive
Under-inflated tires
Worn suspension components
Excessive cornering speeds
Lack of rotation
Toe adjustment out of specification
Camber out of specification
Damaged strut
Damaged lower arm
Partial wear
Feathered edge
Wear pattern

Caused by irregular burrs on brake drums
Toe adjustment out of specification
Damaged or worn tie rods
Damaged knuckle
Excessive toe on non-drive wheels
Lack of rotation


Special Service Tools
Special Service Tools Tool (Number and Name) Illustration Use 09546-26000 Strut spring compressor Compression of coil s ...

Front Suspension System
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See also:

Power Antenna
The antenna will automatically be extended when the radio power switch is turned ON while the ignition key is either in the ON or ACC position. The antenna will automatically be retracted ...

Components and Components Location
Component Location 1. Fuel filler door open switch 2. Fuel filler door release actuator ...

Power Steering
Checking the Power Steering Fluid Level With the vehicle on level ground, check the fluid level in the power steering reservoir periodically. The fluid level should be between MAX and MIN indicat ...

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