engine coolant PONTIAC FIERO 1988 Service Repair Manual

COMPONENT LOCATION VIEWS
ELECTRONIC
EXHAUST GAS
~~~~ S177
RECIRCULATION
(EGR) SOLENOID
AUXILIARY I
COOLANT FAN CANISTER
RELAY PURGE SOLENOID
VALVE
Figure
A - VIN F Engine Compartment (VIN 8 Similar) Figure
B - Rear
Of RH Cylinder Head (VIN E)
6103 IN-LINE
Figure C
- LW Front Corner Of VIN F Engine
Compartment
(VIM 8 Similar)

3 COMPONENT LOCATIQN VIEWS ca D
l
ELECTRONIC SPARK
TIMING (EST) AIR
SELECT AND
DISTRIBUTOR DlVERTER VALVE
A/C COMPRESSOR
CLUTCH
CONNECTOR
AUXlLlARY
COOLANT FAN
RE LAY
Figure
A - RM Side Of VIN F Engine Compartment (VIN 8 Similar) Figure
B - Lower
RW Side Of VIN F Engine
(VlN 8 Similar)
A/C COMPRESSOR -
CLUTCH CONNECTOR
I
Figure C - Top Front RM Side Of VIN F Engine
(VIN 8 Similar)

COMPONENT LOCATION VIEWS I $
6143 COOLANT
TEMPERATURE
SENDER (WITH
GAGES) OR
SWITCH (WITHOUT
GAGES)
FUEL
1) F~oer PUMP
OF c.4 Fj SWITCH
12H21.3
Figure A - Lower LH Side Of VIN F Engine
(VIN 8 Similar)
Figure
B - Lower LH Front Of VIN F Engine
(VIN 8 Similar) THROTTLE
POSITION
START
WITCH 12H20.2
Figure C - Front Of VIN F Engine (VIM 8 Similar)
SENSOR
12H22.1
Figure D - LH Side Of Transmission (Manual
Shown, Automatic Similar) Figure
E
- Center Frcpt Of Dash
Figure
F - LN Side Of Manual Transmission

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.

4 . CHASSIS INDEX
Fitting Pistons ......................................... .6A 2.24
Front (Cover) Crankshaft Oil
Seal
V-6
......................................................... 6A2- 15
V-8
................................................... 6A3- 16
Gear or Sprocket
V-6
......................................................... .6A 2.26
V-8
........................................................ 6A2-28
Honing and Reboring Cylinders ................ 6A2-23
Intake Manifold and Gasket
V-6
......................................................... .6A 2.9
V-8
............................................................ 6A3-6
Main Bearings
V-6
......................................................... .6A 2. 19
V-8
.......................................................... 6A3-20
Oil Filter and Bypass Valve
...................... 6A3-27
Oil Pan and Pump Assembly
V-6
................................................. 6A2.17, 18
V-8
......................................................... 6A3- 18
Oil Seal (Front Cover)
V-6
......................................................... 6A2- 15
V-8 .......................................................... 6A3-16
Piston and Connecting Rod
V-6
......................................................... .6A 2.2 1
V-8
....................................................... .6A 3.23
Piston Rings V-6
......................................................... .6A 2.24
V-8
........................................................ .6A 3.23
Power Train Mounts
V-6
........................................................... .6A 2.7
V-8
.......................................................... 6A3-5
Rear Main Oil Seal
V-6
......................................................... .6A 2.2 1
V-8 ......................................................... .6A 3.22
Rocker Arm Assembly
V-6
............................................................ 6A2-8
V-8 ............................................................ 6A3-8
Rocker Arm and Push Rod
V-6
........................................................... .6A 2.8
V-8
........................................................ 6A3-8
Rocker Arm Studs 6A2- 13
V-6
......................................................... .6A 2. 13
V-8
.......................................................... 6A3-28
Sprocket or Gear Replacement
V-6
......................................................... .6A 2.26
V-8 .......................................................... 6A3-28
Timing Chain and Sprockets
6A2- 15
Torsional Damper
V-6
.......................................................... 6A2- 14
V-8
.......................................................... 6A3- 15
Valves V-6
........................................ .. ............... .6A 2. 14
V-8
......................................................... .6A 2. 15
Valve Guides
V-6
......................................................... .6A 2. 13
V-8
.......................................................... 6A3-14
Valve Lifters
V-6
......................................................... .6A 2. 1 1
V-8
.......................................................... 6A3-10
Valve Mechanism .................................... 6A 10
Valve Seats
V-6
....................................................... .6A 2. 14
V-8
.......................................................... 6A3-14
Valve Spring
.......................................................... V-6 A- 16
............................................................ V-8 6A3-9
................................. Valve Stem Oil Seal .6A 2. 10 Engine Cooling
........................................... Section
6B
Aluminum Radiator Service
............................ 6B-8
Diagnosis
........................................................ 6B-3. 8
Coolant System .............................................. 6B-4
Leak Testing
.................................................. 6B-8
On-Vehicle Pressure Testing
.......................... 6B-9
Repair Methods
........................................... 6B- 10
Special Tools
.............................................. 6B-14
General Description ......................................... .6 B- 1
Coolant Recovery System
.............................. 6B-3
Coolant Temperature Fan Switch
................ 6B-2
Fans
.............................................................. 6B-2
Radiator
...................................................... 6B-1
Radiator Cap
.................................................. 6B-1
Recovery Bottle
.............................................. 6B-2
Temperature Switch
...................................... 6B-2
Thermostat
.................................................... 6B-3
On-Vehicle Service
......................................... 6B- 14
Coolznt Recovery Bottle
............................. .6 B- 16
Electric Cooling Fan
................................... .6 B- 15
Radiator
....................................................... 6B1'
Thermostat ................................................ 5B-, .
Water Pump ................................... .... ......... 6B-15
Service Procedures
............................................ 6B-3
Cooling System Cure
................................. ... 6B-3
Draining and Refilling the
Cooling System
......................................... 6B-7
Drive Belt
................................................... 6B-7
Engine Electrical ...................................... Section 6D
Battery
............................................................. 6D1
Diagnosis
................................................... 6D 1-2
General Description
.................................. 6D 1-1
On-Car Service
.......................................... 6D 1-5
Charging System
............................................... 6D3
Diagnosis
.................................................... 6D3- 1
General Description
.............................. 6D3- 1
On-Vehicle Service
.................................... 6D3-2
Service Procedures
................................. 6D3- 1
Cranking System .......................... ........ ............ 6D2-
Diagnosis .................................................... 6D2- 1 I
General Description .................................. 6D2- 1
On-Car Service
......................................... 6D2J
................ . Engine Wiring .............................. ... 6D
General Description .................................. 6D5- 1
Ignition System
................................................. 6D4
Diagnosis
................................................... 6D4- 1
General Description
............................... 6D4- 1
On-Car Service
.......................................... 6D4-5
Service Procedures
.................................... 6D4-3
Engine Exhaust Systems
...................................... 6F
Engine
- General Information .............................. 6-1
Compression Test
................................................ 6-5
Engine Knock Diagnosis
................................. 6-4
Engine Mechanical
.............................................. 6-3
Engine Performance Diagnosis
.......................... 6-3
Engine Oil Pressure Light
.................................... 8C-3
Engine Performance Specifications
Chart
........................................................ 6E3-C13-3
Evaporator Core
.............................................. 1B 1-24
Exhaust Systems
.......................................... Section 6F
Catalytic Converters
........................................ 6F- 1
Clamp
................................................................ 6F- 1
Component Replacement
.................................. 6F-2
Hangers
......................................................... 6F- 1
Muffler ............................................................. 6F- 1
Removing and Installing Parts ........................ 6F-2
Resonator .......................................................... 6F- 1