2007 KIA CARNIVAL suspension

2007 > 2.7L V6 GASOLINE >
TROUBLESHOOTING
Symptom Possible cause Remedy
Vehicle pulls to one side Scoring of driveshaft ball joint
Wear, rattle or scoring of wheel bearing
Defective front suspension and steering Replace
Replace
Adjust or replace
Vibration Wear, damage or bending of driveshaft
Driveshaft rattle and worn hub splines
Wear, rattle or scratching of wheel bearing Replace
Replace
Replace
Shimmy Improper wheel balance
Bent wheel
Defective front suspension and steering Adjust or replace
Replace
Adjust or replace
Excessive noise Wear, damage or bending of driveshaft
Driveshaft rattle and worn hub splines
Driveshaft rattle and worn side gear splines
Wear, rattle or galling of wheel bearing
Loose hub nut
Defective front suspension and steering Replace
Replace
Replace
Replace
Adjust or replace
Adjust or replace
Bent cage Cage damaged by improper handling or tool usage Replace bearing
Galling Metal smears on roller end due to overheating,
incorrect lubricant or overloading Replace bearing
Check seals, check for
proper lubrication
Cracked inner race Race cracked due to improper fit, cocking or poor bearing
seats Replace bearing
Etching Bearing surfaces appear gray or grayish black
in color accompanied by material etched
away usually at roller spacing Replace bearing
Check seals, check for
proper lubrication
Brinelling Surface indentations on race surface caused by rollers
being under impact loading or vibration while the bearing
is not rotating Replace bearing
Heat discoloration Heat discoloration is dark blue resulting
from overload or no lubricant (Yellow or brown color is
normal) Replace bearing
Check seals and other parts
Fatigue spalling Flaking of surface metal resulting from fatigue Replace bearing
Clean all related parts

CHAPTER 9:

Suspension System

2007 > 2.7L V6 GASOLINE >
TROUBLESHOOTING
Vehicle inspection
SYMPTOM CHART
Symptom Suspect AreaRemedy (See page)
Squeak or grunt- noise from the front
suspension, occurs more in cold
ambient temperatures- more
noticeable over rough roads or when
turning Front stabilizer bar
Under these conditions, the noise is
acceptable.
Clunk - noise from the front
suspension, occurs in and out of turns Loose front struts or shocks
Inspect for loose nuts or bolts.
Tighten to specifications.
Clunk - noise from the rear
suspension, occurs when shifting from
reverse to drive Loose rear suspension components
Inspect for loose or damaged rear
suspension components.
Repair or install new components as
necessary.
Click or pop - noise from the front
suspension - more noticeable over
rough roads or over bumps Worn or damaged ball joints
Install new lower arm as necessary.
Click or pop - noise occurs when
vehicle is turning Worn or damaged ball joints
Install new lower arm as necessary.
Click or snap - occurs when
accelerating around a corner Damaged or worn Birfield joint
Repair or install a new Birfied joint as
necessary.
See DS group - driveshaft.

accelerating around a cornerSee DS group - driveshaft.
Front suspension noise - A squeak,
creak, or rattle noise - occurs mostly
over bumps or rough roads Steering components
Loose or bent front struts or shock
absorbers
Damaged spring or spring mounts
Damaged or worn arm bushings
Worn or damaged stabilizer bar
bushing or linksGo to detailed test A.
Groaning or grinding - noise from the
front strut, occurs when driving on
bumpy roads or turning the vehicle Uneven seating surface between the
insulator and panel by the burrs
around the strut insulator mounting
bolts and the insulator boltes
mounting holesRepair or install a new parts as
necessary.
Rear suspension noise - a squeak,
creak or rattle noise - occurs mostly
over bumps or rough roads Loose or bent rear shock absorbers
Damaged spring or spring mounts
Damaged or worn control arm
bushingsGo to detailed test B.
Shudder - occurs during acceleration
from a slow speed or stop Rear axle assembly mis - positioned
Damaged or worn front suspension
componentsCheck the axle mounts and rear
suspension for damage or wear.
Repair as necessary.
Check for a loose stabilizer bar,
damaged or loose strut/strut bushings
or loose or worn ball joints. Inspect
the steering linkage for wear or
damage. Repair or Install new
components as necessary.
Shimmy - most noticeable on
coast/deceleration - also hard steering
condition Excessive positive caster
Check the caster alignment angle.
Correct as necessary.
Tire noise - hum/moan at constant
speeds Abnormal wear patterns
Spin the tire and Check for tire wear.
Install a new tire as necessary.
Inspect for damaged/worn suspension
components. Perform wheel
alignment.
Tire noise - noise tone lowers as the
vehicle speed is lowered Out- of- balance tire
Balance the tire and road test. Install
a new tire as necessary.
Tire noise - ticking noise, change with
speed Nail puncture or stone in tire tread
Inspect the tire. Repair or replace as
necessary.
Wheel and tire - vibration and noise
concern is directly related to vehicle
speed and is not affected by
acceleration, coasting or decelerating Damaged or worn tire
Go to detailed test C.
Tire wobble or shudder - occurs at
lower speeds Damaged wheel bearings
Spin the tire and check for abnormal
wheel bearing play or roughness.
Adjust or Install new wheel bearings
as necessary.
See DS group - front/rear axle.
Damaged wheel Inspect the wheel for damage. Install
a new wheel as necessary.
Damaged or worn suspension
components Inspect the suspension components
for wear or damage. Repair as
necessary.

Loosen wheel nutsCheck the wheel nuts.
Tighten to specification.
Damaged or uneven tire wear Spin the tire and Check for abnormal
tire wear or damage. Install a new tire
as necessary.
Tire shimmy or shake - occurs at
lower speeds Wheel/tire out of balance
Uneven tire wear
Check for abnormal tire wear. Install a
new tire as necessary.
Excessive radial runout of wheel or
tire Perform a radial runout test of the
wheel and tire.
Install a new tire as necessary.
Worn or damaged wheel studs or
elongate stud holes Inspect the wheel studs and wheels.
Install new components as necessary.
Excessive lateral runout of the wheel
or tire Perform a lateral runout test of the
wheel and tire.
Check the wheel, tire and hub. Repair
or Install new components as
necessary.
Foreign materal between the brake
disc and hub. Clean the mounting surfaces of the
brake disc and hub.
See DS group - front/rear axle.
High speed shake or shimmy - occurs
at high speeds Excessive wheel hub runout
Damaged or worn tires
Damaged or worn wheel bearings
Worn or damaged suspension or
steering linkage
Brake disc or drum imbalanceGo to detailed test D.
Drift left or right Tires
Steering linkage
Alignment
Base brake systemGo to detailed test E.
Steering wheel Alignment
Steering linkage
Front lower arm ball jointGo to detailed test F.
Tracks incorrectly Rear suspension
CasterGo to detailed test G.
Rough ride Front strut and spring assembly
Rear shock absorber and spring
assemblyGo to detailed test H.
Excessive noise Front or rear stabilizer bar
components
Springs
Suspension components
Shock absorbersGo to detailed test I.
Incorrect tire wear Tire or unbalanced wheels
Tire inflation
Strut
AlignmentGo to detailed test J.
Vibration Wheel/tire
Front wheel driveshaft(s)
Steering system
Strut and spring assemblyGo to detailed test K.

Strut and spring assembly
Spring and strut mounting
Front lower arm ball joint
Front lower arm mounting bolt
bushing
Stabilizer bar bushings
Wheel hubs and bearing
Rear suspension arms and bushings
Vehicle leans Tire/wheel
Vehicle load
Suspension components
Incorrect ride heightInflate tires to specification.
Redistribute the load as necessary.
Visually inspect the suspention
system.
Correct the ride height as necessary.
Poor steering returnability High knuckle rotating torque
AlignmentGo to detailed test E.
DETAILED TEST A : FRONT SUSPENSION NOISE CONDITIONS DETAILS/RESULTS/ACTIONS
ROAD TEST THE VEHICLE
a.Test drive the vehicle.
b. During the road test, drive the vehicle over a rough road. Determine
from which area/component the noise is originating.
● Is there a squeak, creak or rattle noise ?
→ YES
Go to
→ NO
The suspension system is OK. Conduct a diagnosis on other suspect
systems.
INSPECT THE STEERING SYSTEM a.Check the steering system for wear or damage.
Perform a steering linkage test.
Inspect the tire wear pattern.
● Are the steering components worn or damaged ?
→ YES
Repair the steering system. Install new components as necessary. Test
the system for normal operation.
→ NO
Go to
FRONT SHOCK ABSORBER/STRUT CHECK a.Check the front shock absorbers/strut mounts for loose bolts or nuts.
b. Check the front shock absorbers/struts for damage. Perform a shock
absorber check.
● Are the front shock absorbers/struts loose or damaged ?
→ YES
Tighten to specifications if loose.
Install new front shock absorbers/struts if damaged. Test the system for
normal operation.
→ NO
Go to
CHECK THE FRONT SPRINGS Check the front spring and front spring mounts/brackets for wear or
damage

● Are the front springs or spring mounts/brackets worn or damaged ?
→ YES
Repair or Install new components as necessary. Test the system for normal
operation.
→ NO
Go to A5.
CHECK THE STABILIZER BAR
a.Check the stabilizer bar bushings and links for damage or wear.
b. Check the stabilizer bar for damage.
c. Check for loose or damaged stabilizer brackets.
● Are the stabilizer bar/track bar components loose, worn or damaged ?
→ YES
Repair or Install new components as necessary. Test the system for
normal operation.
→ NO
Suspension system is OK. Conduct diagnosis on other suspect systems.
DETAILED TEST B : REAR SUSPENSION NOISE CONDITIONS DETAILS/RESULTS/ACTIONS
ROAD TEST THE VEHICLE
a.Test drive the vehicle.
b. During the road test, drive the vehicle over a rough road. Determine
from which area/component the noise is originating.
● Is there a squeak, creak or rattle noise ?
→ YES
Go to
→ NO
The suspension system is OK. Conduct a diagnosis on other suspect
systems.
REAR SHOCK ABSORBER/STRUT CHECK a.Raise and support the vehicle. See GI group - lift support point.
b. Check the rear shock absorber/strut mounts for loose bolts or nuts.
c. Check the rear shock absorbers/strut for damage. Perform a shock
absorber check.
● Are the rear shock absorbers/struts loose or damaged ?
→ YES
Tighten to specifications if loose.
Install new rear shock absorbers/struts if damaged. Test the system for
normal operation.
→ NO
Go to
CHECK THE REAR SPRINGS Check the rear springs and rear spring mounts/brackets for wear or
damage.
● Are the rear springs or spring mounts/brackets worn or damaged ?
→ YES
Repair or Install new components as necessary. Test the system for normal
operation.

operation.
→ NO
Go toB4.
CHECK THE TRAILING ARMS
a.Inspect the trailing arm bushings for wear or damage. Check for loose
trailing arm bolts.
b. Inspect for twisted or bent trailing arms.
● Are the trailing arms loose, damaged or worn ?
→ YES
Repair or Install new components as necessary. Test the system for
normal operation.
→ NO
Suspension system is OK. Conduct diagnosis on other suspect systems.
DETAILED TEST C : WHEEL AND TIRE CONDITIONS DETAILS/RESULTS/ACTIONS
ROAD TEST THE VEHICLE
Wheel or tire vibrations felt in the steering wheel are most likely related
to the front wheel or tire. Vibration felt through the seat are most likely
related to the rear wheel or tire. This may not always be true, but it can
help to isolate the problem to the front or rear of the vehicle.
Test drive the vehicle at different speed ranges.
During the road test, if the vibration can be eliminated by placing the
vehicle in neutral or is affected by the speed of the engine, the cause is not
the wheels or tires.
● Is there a vibration and noise ?
→ YES
Go to C2.
→ NO
The wheel and tires are OK. Conduct a diagnosis on other suspect
systems.
CHECK THE FRONT WHEEL BEARINGS Check the front wheel bearings.
Refer to Wheel Bearing Check (See DS group - front axle).
● Are the wheel bearings OK ?
→ YES
Go to C3.
→ NO
Inspect the wheel bearings. Adjust or Repair as necessary. Test the system
for normal operation.
INSPECT THE TIRES
a.Check the tires for missing weights.
b. Check the wheels for damage.