1988 PONTIAC FIERO odometer

INSTRUMENT PANEL. GAGES & CONSOLE 8C-3
tank only when ignition switch is turned to "ON" or
"ACCESSORY" positions.
When ignition is turned to "OFF" or "START"
positions, the pointer may come to rest at any position.
The letters
"E" and "F" on the fuel gage are used to
point out direction of indicator travel only.
TEMPERATURE WARNING LIGHT
The engine temperature warning light is
controlled by a thermal switch which senses engine
coolant temperatures.
When the ignition switch is turned to "START"
position, a test circuit is closed and the light will come
on to indicate whether the light is functioning properly.
It is important to note that with low boiling-point
coolants (such as plain water) the temperature light
may not come on even though the coolant is boiling.
GENERATOR WARNING LIGHT
The generator warning light, located in the
instrument cluster, should come on when the ignition
switch is turned
"ON" and engine is not running. If
not, either the bulb is burned out or wiring to generator
has an open circuit.
When the generator voltage output becomes
greater than the battery voltage, the
"GEN" light
should go out. This does not, however, indicate
whether the battery is being charged or if the voltage
regulator is functioning properly.
Checks of the charging system are covered in
Section 6D, 'Engine Electrical'.
ENGINE OIL PRESSURE LIGHT
The engine oil pressure warning light is mounted
in the instrument cluster and controlled by a pressure
operated switch located on the engine block. When the ignition switch is
in the
"run" or "start9' position, the
oil pressure light should come on. If not, the bulb is
burned out, there is an open circuit between the bulb
and the oil pressure switch, or there is an open circuit
between the oil pressure switch and the choke heater.
After the engine is running, the oil pressure light
should go out when the oil pressure reaches the correct
specification. If not an oil pressure problem, a faulty oil
pressure switch or an open circuit from the choke
heater fuse to the oil pressure switch is indicated.
"SERVICE ENGINE SOON" LIGHT
All cars have a "SERVICE ENGINE SOON"
light mounted in the instrument cluster. The
"SERVICE ENGINE SOON9' light should come on
during engine starting. The light may stay on
a short
time after the engine starts.
If the light comes on while
driving, service to the emission control system may be
required. See Section
6E and Section 8A-80,
'Instrument Cluster', for complete diagnosis and
wiring diagrams of the
""P;RVICE ENGINE SOON"
light circuit.
UPSHIFT INDICATOR LIGHT
If your vehicle has a manual transmission, there
may be an
''Upshift" light on the instrument panel.
This light is illuminated to indicate optimum shift
points throughout the range from optimum fuel
economy to optimum performance. When this light is
on, shift your transmission to the next higher gear
range if conditions permit. For fuel economy,
accelerate slowly and shift when the light goes on. For
performance, accelerate as desired and shift when the
light goes on.
Safe operation of the vehicle may require shifting
differently than indicated by the "Upshift" light to
adapt to weather, road or traffic conditions.
Downshifting one or more gears may be required
to keep the engine running smoothly or to maintain
satisfactory performance.
DIAGNOSIS
Diagnostic information for all instrument panel
electrical systems is found in Section
8A-80,
'Instrument Panel'.
CAUTION: When removing or
installing any electrical units,
disconnect the negative battery cable
to prevent possible short circuits
which could lead to personal injury
and/or property damage. When
replacing a speedometer or
odometer assembly, the law requires the
odometer reading of the replacement unit to
be set to register the same mileage as the
prior odometer.
if the same mileage cannot be
set, the
law requires that the replacement
odometer be set to zero and a label be
installed on the driver's door frame to show
the previous odometer reading and the date
of replacement.
GENERAL BNFORMATlOM
INSTRUMENT PANEL AND GAGES
The instrument panel is a single unit design and
and screws. To service the instrument panel and
all parts attach to the main instrument panel with clips components see Figs. 601 through 610.

8C.4 INSTRUMENT PANEL, GAGES & CONSOLE
ON-CAR SERVlCE
lNSTRUMEMT PANEL PAD
Figure 601
Remove or Disconnect
1. Four (4) screws in defroster ducts.
2. Screws
under lip of
I.P, pad.
3. I.P. pad from carrier.
lnstall or Connect
1. I.P. to carrier.
2. Screws
under lip of I.P. pad.
3. Four (4) screws in defroster ducts.
INSTRUMENT PANEL CLUSTER
Figure 683
Remove or Disconnect
1. Right and left lower trim plates. Removal of
lower I.P. covers not required.
2. Instrument cluster trim plate.
3. Six (6) cluster attachment screws, pull cluster
back and disconnect speedo cable and electrical
connections.
4. Trip odometer, reset knob (if so equipped) and
remove cluster lens.
5. Individual gages and/or speedo head are now
accessible for service or replacement. If service is
intended for only gages or tachometer, skip Step
3.
Install or Connect
1. Trip odometer, reset knob (if so equipped) and
remove cluster lens.
2. Six
(6) cluster attachment screws, pull cluster
back and disconnect speedo cable and electrical
connections.
3. Instrument cluster trim plate.
4. Right and left lower trim plates. Removal of
lower I.P. covers not required.
INSTRUMENT PANEL CARRIER
Figure 602
Remove or Disconnect
Negative battery cable.
Console. Instrument panel pad and lower hush panels.
Right and left lower I.P. covers and trim plates.
Instrument panel cluster and headlight switch.
Lower steering column.
Five (5) upper and six (6) lower I.P. carrier to
cowl screws.
Instrument panel electrical harness at cowl
(bulkhead) connector, and under dash.
I.P. carrier from car.
10. I.P. mounted components (A/C, defroster ducts,
wiring harness, etc.) are now accessible for service
or replacement.
11. Any seals or sealant damaged during
disassembly.
Install or Connect
I.P. carrier to car.
Instrument panel electrical harness at cowl
(bulkhead) connector, and under dash.
Five (5) upper and six (6) lower I.P. carrier to
cowl screws.
Steering column.
Instrument panel cluster and headlight switch.
Right and left lower I.P. covers and trim plates.
Instrument panel pad and lower hush panels.
Console.
Negative battery cable.
HEADLIGHT SWITCH
Figure 620
Remove or Disconnect
1. Right and left lower trim plates. Removal of
lower I.P.
cover(s) not required.
2. I.P. cluster trim plate.
3. Two (2) switch assembly retaining screws.
4. Depress side tangs and pull switch assembly from
I.P.
5. Individual switches of assembly are now
accessible for service or replacement.
Install or Connect
1. Depress side tangs and replace switch assembly
to I.P.
2. Two
(2) switch assembly retaining screws.
3. I.P. cluster trim plate.
4. Right and
left lower trim plates. Removal of
lower I.P.
cover(s) not required.
DASH MOUNTED ACCESSORY SWITCHES
Figure 62 1
Installation for various dash mounted accessory
switches is shown in Fig.
62 1.
CONSOLE MOUNTED SWITCHES AND
ACCESSORIES
Figure 6 17
Installation of various console mounted switches,
lights and accessories is shown in Figure 617.
CONSOLE
Remove or Disconnect
1. Negative battery cable.
2. Shift gate trim plate. Requires removal
of shift
handle and seven (7) screws.
3. Radio/A/C-heater controller trim plate.

MISCELLANEOUS ACCESSORIES 96-4
SCELLANEOUS ACCESSOR
General Description ................................. 9G-1
Rally Gages .................................................. 9G- 1
Tachometer ................................................. 9G- 1
Trip Odometer
............................................. 9G- 1
Electric Rear Window Defogger ................. 9G-2
Power Remote Control Rearview
Mirror ........................................................ 9G-2
Diagnosis .................................................... 9G-2
Rally Gages ............................................... 9G-2
Tachometer .................................... .... .... 9G-2
Electric Rear Window Defogger ................. 9G-2
Power Remote Control Rearview
Mirror ........................................................ 96-2
Dash and Console Mounted
Accessory Switches
................................. 9G-4
General Description .................................. 9G-4
Electronic Glare Control Mirror ................. 9G-4
On-Car Service ............................................. 9G-4
Rally Gages, Tach ....................................... 96-4.
Rear Window Defogger ............................ 96-4.
Power Remote Control Mirror .................... 9G-4
GENERAL BESCRIP"T0N
RALLY GAGES
Figure I
The Rally Gage option, available on most models,
consists of an engine water temperature gage, an oil
pressure gage and a voltmeter.
These gages are incorporated into the instrument
cluster and replace the standard warning lamps. The
water temperature and oil pressure gages are
electrically operated from sending units mounted in the
cylinder head and oil filter base respectively. The
voltmeter registers regulated voltage, providing an
indication of the charging system's ability to keep the
battery charged. Continuous readings in either the high
or low voltage red bands can indicate improper voltage
regulation, broken or slipping alternator belt,
a shorted
alternator diode
or a defective battery. Readings in the
yellow band are normal with the engine idling or for
short periods after long engine cranking. However,
continuous readings in the yellow band can indicate
faulty operation. See Section
8A for diagnosis.
TACHOMETER
Figure 2
The tachometer indicates speed of the engine in
revolutions per minute (RPM). The engine can safely
be operated up to a maximum RPM as indicated by the
start of the red bar. Engine operation with tachometer
readings in the red area can lead to serious engine
damage.
Due to its dual-coil design, the tachometer may
not return to zero when the ignition
is turned oft: This
is
a normal condition and should not be diagnosed as
a problem in the tachometer.
TRIP ODOMETER
The trip odometer can be reset by twice fully
depressing the push button located on the right side of
the speedometer cluster. The first depression shows all
zeroes, and the second locks them in position. Both
depressions must be done to avoid possible half cycling
I -SERVICE ENGINE SOON
2-BRAKE WARNING LIGHT
3-CHOKE WARNING LIGHT
4-VOLTMETER
5-COOUNT TEMP. GAGE
6-FUEL GAGE
7-SEAT BELT LIGHT
8-OIL PRESSURE GAGE G20003 9G
Fig. 1 Rally Gages - Typical
of the trip odometer. A slow, steady push should be
used to avoid damage to the internal mechanism.
Do not reset the odometer with the
vehicle in motion. Damage to the odometer
may occur.
The trip odometer does not affect service
procedures for speedometers listed in Section
8C.

96.4 MISCELLANEOUS ACCESSORIES
DASH AND CONSOLE MOUNTED ACCESSORY
SWITCHES
Installation for various dash and console
mounted accessory switches is shown in Section
8C.
GENERAL DESCRIPIIOM
ELECTRONIC GLARE CONTROL MIRROR
Service procedures regarding this mirror are
found in the Body Section of this manual.
Fig. 601 EGC Mirror
The EGC mirror has light sensors which monitor
activity in front and back of the mirror and compensate
for brightly lit or extremely dark driving conditions.
After glare is no longer detected in the night mode, a
short time delay is automatically activated, preventing
unnecessary changing as traffic moves in and out
behind the car.
As an added feature, the Automatic
Day/Night
Mirror will hold in the normal viewing mode whenever
the shift selector is placed in reverse. This assures you
of a bright, clear view while backing up.
The Automatic Mirror with EGC (Electornic
Glare Control) is a technological breakthrough using
advanced computer circuitry. It is powered by the
vehicle electrical system and requires no batteries or
scheduled maintenance. Power is drawn only when the
ignition is on.
Illuminated Distance Dial provides a full
range of adjustments to match your eye sensitivity.
Night Mode Indicator illuminates green when
mirror switches to the non-glare position.
Light Sensors monitor ambient lighting
conditions and
headlamp glare, then adjust the mirror
accordingly.
Auto-Off Switch allows fully automatic
operation or manual selection.
ON-CAR SERVICE
RALLY GAGES, TACH REAR WINDOW DEFOGGER
Remove
and Replace
The electric defogger system, available on all
models, is covered in Section
8A. Electrical diagnosis
and grid repair is covered in Body Service Manual.
Removal of the entire gage cluster assembly is not
POWER RmOTE CONTROL REARVIEW
required to service the individual rally gages and/or MIRROR
tachometer.
Electric powered remote control mirrors are
available with a console mounted control that allows
To replace the rally gages, remove the lower and the
mirrors to be adjusted from the driver's seat. The
upper trimplates. Remove the trip odometer reset knob repair
and mounting of the mirror assemblies are
(if so equipped) and gage cluster lens from the front covered in
the Body Service Manual. Location and
(see Section
8C). installation of the control switch is shown in Figure
603.
To replace the tachometer by itself, remove the
lower trimplates, the trip odometer reset knob (if so
equipped) and the instrument cluster lens. Remove the
gage from the cluster. Refer to Section
8C for
hstrument panel cluster removal.

6- CHASSIS INDEX
Upper Air Outlet Deflectors ...................... 8C-12
Interior Lights ............................................. 8A- 1 17-0
Intermediate Shaft (Steering Column)
.............. 3B5-3
J
Jump Starting .................................................... 6D 1-4
Junction Block
((2238) ................................. 8A-202-2
L
Lamp Monitoring ......................................... 8A- 1 1 1-0
License Plate Lights .............................................. 8B-2
Light Switch
.................................................... 8A- 12-0
Lighting Systems and Horns
...................... Section 8B
General Description ......................................... .8 B- 1
Exterior Lights
............................................ 8B- 1
Horns ....................... .. ................................. 8B-3
On-Car Service
.................................................. 8B-3
Exterior Lights 8B-3
Horns
.............................................................. 8B-9
Replacement Bulb Specifications .................... 8B-10
Lights (Exterior) Electrical Diagnosis
Back-up
...................................................... 8A- 1 12-0
Fog ............................................... 8A- 100.3,10 3.0
Front
Marker/Park/Hazard .................... 8A-110-0
Hazard with Lamp Monitor .................... 8A-103-0
Headlights .................................................. 8A- 100-0
High Level Stop
..................................... 8A-110-0
License .................................................. .8A.110.3, 4
Rear Marker
........................................... .8 A. 1 10.3, 4
Stop ........................................................... 8A-110-1
Tail ......................................................... .8 A. 1 10.3, 4
Tail with Monitor
................ .... ........... 8A- 1 1 1-2
Turn
......................................................... 8A- 1 10-0
Lights (Interior) Electrical
Diagnosis Cargo Compartment
............................. 8A- 1 14- 1
Courtesy
................................................. 8A- 1 14-0
Dome
.................................. .. ...................... 8A- 1 14-0
Glove Box .................................................. 8A- 1 14-0
Lights Dimming
...................................... 8A- 1 17-0
Reading
...................................................... 8A- 1 14-0
Lower Heater Outlet
........................................ 1A-14
Lubrication Fitting Locations .............................. OB-6
M
Maintenance and Lubrication .................... Section OB
Manual Transmission
. 5 Speed 77 mm .... Section 7B
Diagnosis
........... .. ............................................ 7B-2
On-Vehicle Service
.......................................... 7B-3
Repairs
................................... .... .................... 7B- 12
Special Tools
................................................. 7B-20
. Specifications .............................................. 7B 19
Maintenance Items
................................................ OB-2
Master Cylinder
........................................ Section 5A3
General Description
...................................... ..5A 3.2
On-car Sevice
................................................ 5A3-2
Unit Repair ..................................................... .5A 3.2
Master Cylinder Overhaul
......................... .5A 3.2
Master Cylinder Reservoir
......................... .5A 3.3
Metric Fasteners
................................................ OA- 1
Metric-English Conversion Table ..................... .O A. 10
Miscellaneous Accessories
........................ Section 9G
Diagnosis
.......................................................... 9G-2
Dash/Console Mounted Accessory
Switches
.................................................... 9G-4 Electric
Rear Window Defogger
................ 9G-2
Power Remote Control
Rearview
......................... Mirror ...................... .. 9G-2
Rally Gages
................................................. 9G-2
Tachometer
.................................................. 9G-2
..................................... General Description 9G-4
Electric Glare Control Monitor
.................. 9G-4
Electric Rear Window Defogger
................ 9G-2
Power Remote Control
Rearview
Mirror ..................................................... 9G-2
Rally Gages
................................................. 9G-1
Tachometer
................................................. 9G-1
Trip Odometer
............................................ 9G-1
............................................. On-Car Service 9G-4
Power Remote Control Mirror
.................... 9G-4
Rally Gages. Tach
..................................... 9G-4
Rear Window Defogger
.............................. 9G-4
Mirrors..Power ............................................ 8A- 141-0
Automatic
Day/Night ............................. 8A- 143-0
..................................... Defogger. Mirror 8A-61-0
.......................................... Model Identification OA-'
Muffler ................................................................. 6Fi
N
Neutral Start and Back-Up Lamp
Switch
...................................... ..
0
On-Vehicle Service
Air Conditioning
.................................... ... . 1B-20
Automatic Transmission
............................... .7A 1.3
Battery
........................................................ 6D1-5
................................ ......................... Brakes ... 5-7
Bumpers
......................................................... 2B-4
Charging System
.............................. ... ........... 6D3-2
Chassis Sheet Metal
.......................................... 2C-7
Clutch
................................................................ 7C-5
Cranking System
............................................ 6D2-4
Cruise Control ............................................... 9B-6
Disc Brake Caliper Assembly,
3000/3 100 Series .......................................... 5BliC
Disc Brake Caliper Assembly,
3548 Series
................................................... 5B6-3
Drum Brake Assembly .................................... 5C3-1
Engine (V-6) .................................................... 6A2-7
Engine (V-8) ................................................ -6A3-5
Engine Cooling ....................................... .. .... 6B- 14
Front Suspension
........................................... 3C-1
Horns and Lighting System .............................. 8B-3
Ignition System
.............................................. 6D4-5
Instrument Panel, Gages and
Console
.......................................................... 8C-4
Lighting System and Horns
.......................... .... 8B-3
Miscellaneous Accessories
.......................... .... 9G-4
Power Head Assembly
. Tandem
Diaphragm
................................................. 5D-2
Power Steering Gear and Pump
.................... 3B7-3
Propeller Shaft
............................................. 4A-1
.......................... Radio Systems and Antennas 9A-9
Rear Axle
.......................................................... 4B-8
Rear Axle (Borg Warner)
........................... ... 4B 1-7
Steering Linkage ............................................. 3B6-2
........................ Steering Wheels and Columns 3B5-2
Wheel Alignment
......................................... 3A-2
Windshield Wiper
- Washer System ................ 8E-3