2007 FORD FIESTA manual transmission

I 00-04-1 2 Noise, Vibration and Harshness I 00=04m12
DIAGNOSIS AND TESTING
Power Steering Hiss Noise
Test Condition
Listen for steering hiss noise with the vehicle
parked, transmission in neutral and all windows
-
closed in the following test conditions.
Power Steering Lock Stop Impact Knock 1. Turn the steering wheel to the left-hand and
Noise right-hand steering locks and listen for the
impact noise.
Test Condition
Listen for steering knock noise with the engine
speed at idle in the following test conditions (noise
also apparent with engine off).
Action
CHECK the installation and
potential damage of the floor seal.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
N0TE:Engine speed at idle
turning the steering wheel slowly
lock to lock.
Power steering system hiss noise
- a high frequency, continuous
rush or swish noise like escaping
air from a balloon. Hiss occurs
while turning between the steering
lock stops, all steering angles.
Noise does not change with
engine rpm and is worse at high
operating temperatures.
N0TE:Engine speed at idle
holding the steering wheel against
a steering lock for three seconds.
Do not hold for more than five
seconds.
Power steering system hiss noise
- a continuous noise like escaping
air occurs while holding the
steering against a steering lock
stop.
Possible Sources
Floor seal.
Power steering gear valve design.
Power steering system hydraulic
design.
Power pump pressure
relief valve.
Power Steering Mechanical Knock Noise 1. Turn the steering wheel 90 degrees to the right,
(PAS off) hold and then quickly release.
2. Turn the steering wheel 90 degrees to the left, Test Condition hold and then quickly release.
Listen for steering knock noise with the engine off
in the following test conditions (no power assist).
2006.0 Fiesta 1212006 G37349en
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system knock
noise
- a heavy loud sound like a
knock on a door that occurs in
parking condition when hitting the
lock stop.
Possible Sources
Power steering gear mechanical
noise, metal to metal at end of
steering travel.
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100-04-14 Noise, Vibration and Harshness 100-04-14
DIAGNOSIS AND TESTING
Power Steering Column Knock Noise I. Drive over cobbled stones at low speed 16-40
kmlh (1 0-25 mph) with and without steering
Test Condition input carefully listening for knock sounds.
Symptom
Power steering system knock1
clonk noise - sounds almost
identical to column knock that
occurs when driving and cornering
over cobbled stones or rough
roads. Noise may appear to
emanate from a location closer to
the floor than that for column
knock (Sounds like metallic noise
but is created by pressure impulse
in gear and return line
- similar to
a sound like quickly turning off a
water tap).
Listen for steering knock noise in the following test 2. Drive over straight tar strips, road rails or 25 mm
conditions with windows closed. tall
harshness strips at low speed 16-40
kmlh
(10-25 mph) both driving straight and with
moderate cornering.
Possible Sources
Power steering return lines.
High power assist gain of power
steering gear valve (steering gear
design
- no quality issue).
High power steering pump
flow
rate (by design).
Power Steering Toc-Toc Noise 1. Turn the steering wheel from left to right abruptly
changing direction.
Test Condition 2. Drive the vehicle for low speed parking
Listen for steering
toc-toc noise with the engine manoeuvres constantly changing steering
speed at idle and the vehicle parked, automatic direction.
transmission in "P" (PARK) or manual transmission
in neutral and the windows closed.
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system column
knock noise
- a loose sounding
rattle or vibration coming from the
column. Noticeable by hearing
and touch.
2006.0 Fiesta 1212006 G37349en
Possible Sources
Steering column or steering
column
Action
CHECK the steering column
retaining bolts and attachments
to the steering column and secure
if necessary.
REFER to: Specifications (21 1
-
04, Specifications).
Check steering column and inter- mediate shaft for free play or
loose components.
REFER to: Steering System (2 11
-
00, Diagnosis and Testing).
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100-04-15 Noise, Vibration and Harshness 100-04-15
DIAGNOSIS AND TESTING
Power Steering Grinding Noise 1. Slowly turn the steering wheel from lock to lock.
Test Condition
Action
Certain amount of noise level
acceptable, not a safety critical
item.
Symptom
Power steering system toc-toc
noise - a metallic noise created
when changing direction of
steering wheel rotation during
parking manoeuvre or at stand-
still.
2. Tilt and extend the steering column in various
positions and slowly turn the steering wheel
Possible Sources
gear (design tolerance
in steering rack).
Listen for steering grinding noise with the engine from lock to lock.
speed at idle and the vehicle parked, automatic
transmission in "P" (PARK) or manual transmission
in neutral and the windows closed.
Power Steering Zip Noise
Symptom Possible Sources Action
Power steering system grinding
noise
- an abrasive noise (like
sand paper rubbing against wood)
occurs between moving compon-
ents such as steering wheel and
the steering column shroud.
2006.0 Fiesta 1212006 G37349en
Steering wheel to shroud interfer-
ence.
Steering column bearing.
Foreign material in contact with
the steering column
shaft.
Clockspring.
Action
Certain amount of noise level
acceptable, not a safety critical item.
BLEED the power steering
system.
REFER
to: Power Steering
System Bleeding
(21 1-00
Steering System
- General
Information, General Proced-
ures).
Symptom
Power steering system zip noise
- occurs when hydraulic fluid
does not flow freely through the
power steering pump supply hose
from steering fluid reservoir to
power steering
pump causing
cavitation
at the pump. Zip is
primarily a cold weather start-up
phenomenon (below -1 0°C). Certain amount
of noise level
acceptable, not a safety critical
item.
Certain amount of noise level
acceptable, not a safety critical
item.
CHECK if floor covering is
obstructing the steering gear
pinion.
CHECK the installation of the floor
seal.
CHECK the clockspring and
secure if necessary.
REFER to: Clockspring (501
-208,
Removal and Installation).
Possible Sources
steering
Aeration of the power steering
fluid.
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100-04-16 Noise, Vibration and Harshness 100-04-1 6
DIAGNOSIS AND TESTING
Driveline Noise and Vibration
Suspension Noise and Vibration
Action
GO to Pinpoint Test A.
GO to Pinpoint Test
B.
GO to Pinpoint Test C.
Symptom
Shake and vibration while driving
Tip-in moan
Idle boomlshake/vibration/
shudder
Pinpoint Tests steps necessary to correct the condition. Then
check the operation of the system to make sure
N0TE:These Pinpoint Tests are designed to take the
condition has been corrected.
the technician through
a step-by-step diagnosis ~fi~~ verifying that the condition has been procedure to determine the cause of a condition. corrected, make sure all components removed It may not always be necessary to follow the chart have been installed. to its conclusion. Carry out only the pinpoint test
PINPOINT TEST A : SHAKE AND VIBRATION WHILE DRIVING
TEST CONDITIONS
DETAILSIRESU LTSIACTIONS 1
Possible Sources
Wheel end vibration.
. Engine/transmissiOnm
Air cleaner.
Power assisted steering.
Powertrain.
Powertrainldrivetrain mounts.
Exhaust system.
Cable(s)lhose(s).
Powertrainldrivetrain mounts.
Exhaust system.
Belt/ pulleys.
I A1 : NEUTRAL COAST I
Action
GO to Pinpoint Test D.
GO to Pinpoint Test E,
Symptom
Wheel end vibration analysis
Nan-axle noise
Carry out the neutral coast test.
Does the vibration disappear during the neutral
coast test?
+ Yes
GO to A2.
+ No
GO to Pinpoint Test D.
Possible Sources
Suspension.
. Wheel bearings,
Trim panels.
Air conditioning (A/C) system.
Accessories.
- --
2006.0 Fiesta 1212006 G37349en
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204-01 -9 Front Suspension 204-0 I -9
REMOVAL AND INSTALLATION
Front Stabilizer Bar(l4 752 0)
i , Special Tool(s1
General Equipment
205524
I Transmission jack 1
Alignment Pins, Subframe
205-524 (1 5-1 22)
I Wooden block I
Removal
1. N0TE:Make sure the road wheels are in the
straight ahead position.
Centralize the steering and lock
it in position.
2. Detach the steering column shaft from the
steering gear pinion.
Discard the retaining bolt.
3. Raise and support the vehicle.
For additional information, refer to: Jacking
(100-02 Jacking and Lifting, Description
and Operation)
I Lifting (1 00-02 Jacking and Lifting,
Description and Operation).
4. N0TE:Use a 5 mm Allen key to prevent the
ball joint from rotating.
Detach the stabilizer bar connecting link from
the stabilizer bar on both sides.
5. Remove the engine support insulator.
2006.0 Fiesta 1212006 GI 83758en
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204-01 -1 0 Front Suspension 204-01 -1 0
REMOVAL AND INSTALLATION
6. Detach the exhaust system from the exhaust 12. Remove the stabilizer bar bushings.
hanger insulator. For additional information, refer to: Front
Stabilizer Bar Bushing
(204-01 Front
Suspension, Removal and lnstallation).
Installation
1. Install the stabilizer bar bushings.
For additional information, refer to: Front
Stabilizer Bar Bushing
(204-01 Front
Suspension, Removal and lnstallation).
2. Position the stabilizer bar on the
crossmember.
3. N0TE:Do not fully tighten the stabilizer bar
7. Using a suitable transmission jack and a clamp
retaining bolts at this stage.
wooden block, support the crossmember.
Install the stabilizer bar clamp on both sides.
8. Remove the crossmember retaining bolts on
both sides.
4' AWARNING:~~~~ installing the stabilizer
bar, the measurement must be taken in a
9. Lower the crossmember to gain access to
the stabilizer bar. vertical plane
between the crossmember and
the stabilizer bar. Failure to follow this
10. Remove the stabilizer bar clamp on both instruction
may result in personal injury.
sides. Set the stabilizer bar to the installation
setting.
11. Remove the stabilizer bar.
Using cable ties, support the stabilizer bar
on both sides.
2006.0 Fiesta 1212006 GI 83758en
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204-01 -1 I Front Suspension 204-01 -1 1
REMOVAL AND INSTALLATION
5. Install the stabilizer bar.
i Tighten the bolts in two stages. Stage 1 : 10 Nm.
Stage 2: 55 Nm.
6. Remove the cable ties.
7. Using the transmission jack and the wooden
block, position the crossmember.
8. N0TE:Use the inner crossmember retaining
bolt to locate the special tools.
Install the special tools on both sides.
&AUTION:W~~I~ tightening the
crossmember retaining bolts, make sure the
crossmember does not move. Install the
crossmember retaining bolts on
both sides.
10. Remove the special tools.
11. Install the crossmember inner retaining
bolts on both sides.
12. Remove the transmission jack and wooden
block.
13. Attach the exhaust system to the exhaust
hanger insulator.
2006.0 Fiesta 12/2006 GI 83758en
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204-02-6 Rear Suspension 204-02-6
REMOVAL AND INSTALLATION
Rear Shock Absorber(l5 791 0)
General Equipment 5. Remove the shock absorber.
I Transmission jack I
Removal
1. Remove the wheel and tire. For additional
information, refer to Section
204-04 [Wheels
and Tires].
2. Detach the fender splash shield from the
fender.
3. Using a suitable transmission jack, support
the beam axle.
4. Detach the shock absorber from the beam
axle.
Installation
I. Attach the shock absorber to the body.
2. N0TE:Do not fully tighten the shock
absorber lower mounting bolt at this stage.
Install the shock absorber.
2006.0 Fiesta lu2006 G89134en
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