check engine FORD FIESTA 2007 User Guide

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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I 00-04-1 9 Noise, Vibration and Harshness 100-04-19
DIAGNOSIS AND TESTING
PINPOINT TEST C : IDLE BOOMISHAKENIBRATIONISHUDDER
1 TEST CONDITIONS DETAILSIRESU LTSIACTIONS
C1: CHECK THE CABLEIHOSES
rn Check the engine compartment for any
component that may have a touch condition
between the engine and body or chassis. For
example: control cable, air conditioning
(AIC)
hoses, acceleration cable.
Are the components OK?
-+ Yes
GO to C2.
+ No
REPAIR or INSTALL new components as
necessary. ROAD TEST as necessary.
C2: CHECK THE ENGINE COOLING RADIATOR
rn Check the engine cooling radiator mountings
and bushings for security and condition. Check
the radiator installation for any component that
may have a touch condition.
Is the installation and bushings OK?
+ Yes
GO to C3.
-+ No
REPAIR or INSTALL new components as
necessary. ROAD TEST as necessary.
C3: CHECK THE EXHAUST SYSTEM
rn Carry out the exhaust system neutralizing
procedure.
REFER to: Exhaust System Neutralizing
(1 00-
04, General Procedures).
Is the exhaust system OK?
+ Yes
GO to C4.
+ No
REPAIR as necessary. ROAD TEST as
necessary.
2006.0 Fiesta 1212006 G37349en
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204-01 -1 2 Front Suspension 204-01 -1 2 ---- - -
REMOVAL AND INSTALLATION
14. Install the engine support insulator. 18. Check the toe setting and adjust as
necessary.
For additional information, refer to:
Specifications
(204-00 Suspension
System
- General Information,
Specifications)
I Front Toe Adjustment (204-00 Suspension
System
- General Information, General
Procedures).
15. N0TE:Use a 5 mm Allen key to prevent the
ball joint from rotating.
Attach the stabilizer bar connecting link to
the stabilizer bar on both sides.
16. Lower the vehicle.
7m AWARNING:I~~~~II a new steering column
to steering gear pinion retaining bolt.
Failure to follow this instruction may result
in personal injury.
Attach the steering column shaft to the
steering gear pinion.
2006.0 Fiesta 1212006 GI 83758en
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204-04-3 Wheels and Tires 204-04-3
DIAGNOSIS AND TESTING
Wheels and Tires
lnspection and Verification
Visual Inspection Chart
I Mechanical I
I Tire pressure(s) * I
I Wheel nuts I
I Wheel studs I
* Vehicles equipped with a tire pressure monitoring system must be inspected for correct operation
using the diagnostic tool.
To maximize tire performance, inspect the tires for
signs of incorrect inflation and uneven wear which
may indicate a need for balancing, rotation or
suspension alignment. Tires should also be
checked frequently for cuts, stone bruises,
abrasions, blisters and for objects that may have
become embedded in the tread. More frequent
inspections are recommended when rapid or ( extreme temperature changes occur or when road
surfaces are rough or occasionally littered with
foreign material.
As a further visible check of tire condition, tread
wear indicators are molded into the bottom of the
tread grooves. When these indicator bands become
visible, new tires must be installed.
Tire Wear Diagnosis
Uneven wear is usually caused by either excessive
camber or excessive toe on tires.
Sometimes incorrect toe settings or worn struts will
cause severe 'cupping' or 'scalloped' tire wear on
non-driven wheels.
Severely incorrect toe settings will also cause other unusual wear patterns.
Tire Vibration Diagnosis
A tire vibration diagnostic procedure always begins
with a road test. The road test and customer
interview (if available) will provide much of the
information needed to find the source of a vibration. During
the road test, drive the vehicle on a road
that is smooth and free of undulations. If vibration
is apparent, note and record the following:
- the speed at which the vibration occurs.
- what type of vibration occurs in each speed
range.
- mechanical or audible
- how the vibration is affected by changes in the
following:
- engine torque
- vehicle speed
- engine speed
- type of vibration - sensitivity:
- torque sensitive
- vehicle speed sensitive
- engine speed sensitive
The following explanations help isolate the source
of the vibration.
Torque Sensitive
This means that the condition can be improved or
made worse by accelerating, decelerating,
coasting, maintaining a steady vehicle speed or
applying engine torque.
Vehicle Speed Sensitive
This means that the vibration always occurs at the
same vehicle speed and is not affected by engine
torque, engine speed or the transmission gear
selected.
2006.0 Fiesta 1212006
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205-04-5 Front Drive Halfshafts 205-04-5
DIAGNOSIS AND TESTING
Possible Sources Action
Halfshaft Joint Pullout Outer front drive halfshaft INSPECT
and REPAIR or
retainer circlip missing or not
I I INSTALL new as necessary.
Front suspension components
worn or damaged.
correctly seated differential
side. CHECK
for worn bushings or
bent components (front stabil-
izer bar, front suspension lower
arm). REPAIR or INSTALL new
as necessary. REFER to
Section
204-01 [Front
Suspension]. REFER to Halfshaft
LH
-
1 Halfshaft RH - in this section.
Engineltransaxle assembly
misalignment. CHECK engine mounts for
damage or wear. REPAIR or
INSTALL new as necessary.
Frame rail or strut tower out of
position or damaged. CHECK underbody dimen-
sions. REFER to Section
501 -
00 [Body System - General
Information].
-- - --
2006.0 Fiesta 1212006 G25403en
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206-00-24 Brake System - General Information 206-00-24
DIAGNOSIS AND TESTING
TEST CONDITIONS DETAILSIRESU LTSIACTIONS
12: ROAD TEST THE VEHICLE
rn Road test the vehicle and apply the brakes.
Are the brakes functioning correctly?
-+ Yes
Vehicle OK.
+ No
INSPECT individual wheel cylinders or
calipers for binding or sticking components.
INSTALL new components as necessary.
BLEED the brake system. REFER to: (206-00
Brake System
- General Information)
Brake System Bleeding (General Procedures),
Brake System Pressure Bleeding (General Procedures).
TEST the system for normal operation.
PINPOINT TEST J
: EXCESSIVE BRAKE PEDAL EFFORT
TEST CONDITIONS
DETAILSIRESULTSIACTIONS
J1: CHECK BRAKE APPLICATION
With the engine off, apply and release the brake
pedal five times to deplete all vacuum from the
brake booster. Apply the brake pedal, hold with
light pressure. Start the engine.
Does the brake pedal hold?
+ Yes
GO to J2.
+ No
GO to J6.
52: CHECK BRAKE BOOSTER FOR LEAKS
rn Run the engine at medium idle, release the
accelerator pedal and turn the engine off. Wait
90 seconds and apply the brakes. Two or more
brake applications should be power assisted.
Does the brake booster work?
+ Yes
Vehicle OK.
-+ No
GO to
J3.
2006.0 Fiesta 1212006 G28494en
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206-00-25 Brake System - General Information 206-00-25
DIAGNOSIS AND TESTING
TEST CONDITIONS
53: CHECK BRAKE BOOSTER CHECK VALVE
rn Disconnect the vacuum hose, for the brake
booster check valve at the intake manifold. Blow
into the hose attached to the brake booster
check valve.
Does air pass through the valve?
+ Yes
INSTALL a new brake booster check valve.
TEST the system for normal operation.
+ No
GO to J4.
54: CHECK BRAKE BOOSTER CHECK VALVE VACUUM
rn Disconnect the vacuum hose from the brake
booster check valve. Run the engine at idle.
Check the supply with a vacuum gauge.
Is the vacuum pressure above 40.5 kPa (12
in-Hg) with the brake booster non-operational?
+ Yes
GO to J5.
+ No
REPAIR or INSTALL a new vacuum hose and
fittings. TEST the system for normal operation.
55: CHECK BRAKE BOOSTER
rn Check the brake booster. GO to the component
test procedure in this section.
Is the brake booster OK?
+ Yes
GO to J6.
+ No
INSTALL a new brake booster. REFER to:
(206-07 Power Brake Actuation)
Brake Booster
- LHD (Removal and lnstallation),
Brake Booster
- RHD (Removal and lnstallation).
TEST the system for normal operation.
2006.0 Fiesta 1212006 G28494en
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206-00-27 Brake System - General Information 206-00-27
DIAGNOSIS AND TESTING
PINPOINT TEST K : BRAKE NOISE
TEST CONDITIONS
DETAILSIRESU LTSIACTIONS
K1: CHECK FOR PEDAL NOISE
Inspect the brake pads and brake shoes for
excessive wear.
- Run the engine at idle for 10 seconds or
longer. Apply the brake pedal and listen for
noise. Compare results with a known good
system.
Was a noise present?
-+ Yes
GO to K2.
-+ No
Vehicle OK.
K2: CHECK PUSH ROD ALIGNMENT
Check the brake booster push rod alignment
and travel.
Is the push rod OK?
-+ Yes
BLEED the brake system. REFER to: (206-00
Brake System
- General Information)
Brake System Bleeding (General Procedures),
Brake System Pressure Bleeding (General
Procedures). TEST the system for normal operation.
-+ No
INSTALL a new brake booster. REFER to:
(206-07 Power Brake Actuation)
Brake Booster
- LHD (Removal and lnstallation),
Brake Booster
- RHD (Removal and Installation).
TEST the system for normal operation.
2006.0 Fiesta 1212006 G28494en
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