1988 PONTIAC FIERO Service Repair Manual

2 - CHASSIS INDEX
Backup Lamp Switch (Circuit) .......... 8A- 1 12. 7A 1-5
Backup Lights
..................................................... 8B-1
...................................................... Battery Section 6D 1
............................ Battery Specification Chart 6D 1-7
.................................... Body Identification ... .... OA- 1
Borg Warner Rear Axle .......................... Section 4B1
...................................................... Blower Motor 1A-14
Blower Switch
.................................................... 1 A- 13
Booster Assembly
............................................. 5D2-2
Brakes
- General ......................................... Section 5
Adjustment
.................................................... 5C3-4
Booster Assembly
. Tandem
Diaphragm
................... .... ..................... 5D2- 1
................................................ Components 5C3- 1
Diagnosis and Inspection
................................. 5-3
Disc Brake Caliper Assembly
.................................................... 3548 Series 5B6-1
Drum Brake Assembly ........................ Section 5C3
General Description
.......................................... 5-2
On-Car Service
.................................................... 5-7
Specifications & Special Tools ......................... .5 F. 1
...................................................... Unit Repair 5A3- 1
.......................................... Warning System 8A-4 1-0
............ Brake Pedal Mounting .. ......................... 5-1 7
Bulb Usage Chart
............................................ 8B-10
............................................ Bumpers Section 2B,3 D.6
Bumper Energy Absorbing Units
.................... 2B-2
Bench Testing
................................................ 2B-3
........................................ Damage/Leakage 2B-3
................................ Removal After Collision 2B-2
............................................. Fascia Rub Strips .2 B. 1
.................................................... Front Bumper 2B-2
Assembly
........................................................ 2B-4
Energy Absorber
........................................... 2B-4
............................................................. Fascia .2 B. 1
On-Vehicle Service
...................................... 2B-4
Rear Bumper
.................................... .... ............ 2B-2
........................................................ Assembly 2B-5
Energy Absorber
............................................ 2B-4
............. .................... Fascia Molding Strip .. 2B-5 ........................................... Service Procedures .2 B. 1
.................................................. Specifications 2B-5
C
Caliper Assembly . Disc Brake
.............................................. 3000/3 100 Series 5B 1-2
3548 Series
...................................................... 5B6-2
Caliper Overhaul
....................... 3000/3 100 Series .. ............... 5B 1-4
3548 Series
.................................................... 5B6-5
Caster and Camber Adjustment
........................ 3A- 1
............................................. Catalytic Converter 6F-2
Center High-Mounted Stoplight
....................... ... 8B- 1
Charging System
...................... 8A.30.7, Section 6D3
Chassis Electrical
.................................... Section 8B
Center High Mounted Stoplight
...................... 8B-1 ................................. Exterior Light Monitor .8 B. 1
................................................................ Chimes 8A-77
................................ Cigar Lighter (Circuit) 8A- 1
14-0
.............................. Circuit Breaker Details Section 8A
Power ACC Circuit Breaker .... 8A- 10.1.10.3.10.5.
11-3
.... Window Circuit Breaker 8A~10~1,10~3.10~5.1 1.4
Clutch
........................................................ Section 7C
......................................... General Description .7 C. 1 ........................................................... Diagnosis 7C-2 Bleeding
Hydraulic Clutch System
................. .7 C.2
Preliminary Checks ..................................... ... 7C-2
On-Vehicle Service
........................................... 7C-5
Clutch Hydraulic System
.................................. 7C-5
Clutch Pedal ...................................................... 7C-6
Pilot Bearing
..................................................... 7C-6
Pressure Plate and Disc
.................................... 7C-6
Special Tools
......................... ....... ................ 7C-8
Specifications
................................................... 7C-8
Coil Springs and Insulators .............................. 3D-1
Component Fluid Capacities
................................ OB-6
Component Location Views
........................ 8A-201-0
Composite Master Cylinder
................... Section 5A3
Compression Test
.................. .. ............................. 6-5
Condenser Mounting
....................................... 1B 1-24
Connectors
.................................................... 8A-202-0
Coolant Fan Temperature Switch
...................... 8A-3 1
Cooling and Radiator
................................ Section 6B
Cooling System Capacities
................................. OB-6
Cooling System Diagnosis
.................................... 6B-3
Cranking System
...................................... Section 6P*
Diagnosis ..................................................... 6~2
General Description ................................ 6D2- 1
Cranking System
........................................ 6D2- 1
Solenoid
................................................... 6D2- 1
Starter Motor ......................................... 6D2-1
On-Vehcile Service
...................................... 6D2-4
Specifications
............................................ 6D2- 1
Starter
........................................................ 6D2-4
Unit Repair
............................................ 6D2-6- 11
Service Procedures
...................................... 6D2-3
Cruise Control
.............................. 8A-34-0, Section 9B
Diagnosis
............................................................ 9B-4
Cruise Set Speed High or Low
.................... 9B-4
Cruise System Surges
.................................. 9B-4
Cruise Tap-Up and Tap-Down
...................... 9B-4
Excessive Cruise Speed Loss on
Hills
........................................................... 9B-4
General Description
........................................ 9B-1
Electrical and Vacuum Release
Switches
...................................................... 9B-4
Electrical Harness
.......................................... 9B-A
Electronic Controller (Module) .................... 9B .
Off/On/Resume/Accel Switch
Operation
.................................................. .91 B-
Servo Unit
.................................................... 9B-2
Set/Coast Button Switch .............................. 9B-1
................................................ Speed Sensors 9B-3
Vacuum Supply
............................................ 9B-4
On-Car Service
.................................................. 9B-6
................................ Cruise Release Switches 9B-6
.......................................... Servo Mounting 9B-10
Vacuum Harness and Cable Routing
VIN
E ................................. .. .................. 9B,7
.................................................... VIN F, 8 9B-9
....................................................... VIN S 9B-8
........................ Vacuum Tank - VIN S,F,E, 9B-10
.............................. Cruise Control (Circuit) 8A-34-0
D
......................................... Defogger (Circuit) $A-6 1-0
..................... ...... Defroster Duct Assembly ... .812 C-
Diagnosis
Air Conditioning
- General ........................... 1B-5
.................... Automatic Transmission - General 7A
Automatic Transmission
- ................ HD-700-R4-2

Battery .......................................................... 6D1-2
Brakes
.................................................................. 5-3
................................ Bumper. Energy Absorber 2B-2
........................................... Charging System 6D3- 1
........................................ Cooling and Radiator 6B-3
....................... ................ Cranking System .. 6D2- 1
Cruise Control
................................. 9B-4, 8A-34-0
......................................... Drive Axles (Rear) 4B1-2
Engine Performance
......................................... 6-3
.............................................. Ignition System 6D4-3
Instrument Panel, Gages and
.................................................... Console 8C-3
............................. Miscellaneous Accessories 9G-2
............................................... Power Antenna 9A-2
Power Recirculation Ball
.................................. 3-3
Power Steering Pumps
........................................ 3-4
.............................................. Propeller Shaft 4A- 1
................................................................ Radio 9A-1
.............. Seal Replacement Recommendations 3- 10
........................ . Steering Gear and Pump Leaks 3-10
.............. Strut Dampener and Shock Absorber 3- 12
.................................................... Trim
Height 3- 14
.................................................. Steering Linkage 3-3
Steering, Suspension, Tires and
Wheels
.............................. .. ................. Section 3
Steering Wheels and Columns
............................ 3-4 ......................................................... Vibrations 3- 14
................................................. Wheel Bearing 3-14 .............................................. Wheels and Tires 3- 13
........................... Windshield Wiper System 8El-2
............................................. Digital Cloclc 8A- 150-0
Disc Brake Caliper Assembly
.......................................... (3000/3 100 Series) 5B1
............... ................... General Description .. 5B 1-2 ............................................... On-Car Service 5B 1-2
...................................... Caliper Assembly 5B 1-2
.......................... Shoe and Lining Assembly 5B 1-4
...................................................... Unit Repair
5B 1-4
.......................................... Caliper Overhaul 5B 1-4
?isc Brake Caliper Assembly (3548
Series)
............................................................. 5B6
General Description
....................................... 5B6-2
On-Car Service
............................................... 5B6-2
....................................... Caliper Assembly 5B6-2
.......................... Parking Brake Adjustment 5B6-3
.......................... Shoe and Lining Assembly 5B6-4
Unit Repair
............................... ... .................... 5B6-5
Caliper Overhaul
.......................................... 5B6-5
.......................... Door Lock Relay (Circuit) 8A- 130-0
Driveability and Emissions
........................ Section 6E
Fuel Injection (Port)
..................................... 6E3-1
Index
................................... follows 6E3-(213-2
...................................... Fuel Injection (TB 1) .6E
2- 1
...................................... Index follows 6E2-C 14-4
Drum Brake Assembly
................... ......... Section 5C3
General Description
......................... ... ............ 5C3-1
........................................... On-Car Service 5C3- 1
Backing Plate
........................................ 5C3-7
....................................... Brake Adjustment .5C 3-4
..................................... Brake Components 5C3-1
Parking Brake Adjustment
.......................... 5C3-4
Wheel Cylinder ........................................... 5C3-5 ..................................................... Unit Repair 5C3-7
............................ Wheel Cylinder Overhaul 5C3-7
CHASSIS INDEX m3
E
........................ Electric Rear Window Defogger 9G-2 ............................................ Electrical Diagnosis 88-1
Audible Alarms .............................................. 81%-77
.......................................... Component Data 818-201
.................................................... Headlights 8A- 100
........................ Heating and Air Conditioning 8A-60 .............................................................. Index $A- 1
........................................... Instrument Panel .8 A-82
.................................................. Introduction 8A-2
........................................................... Lights .8 A- 100
............................................ Repair Procedure 88-5 ........................................ Seats and Mirrors 8A- 141
......................................................... Symbols 8A-3
Troubleshooting Procedures ............................ 8A-4
.................................................. ... Windows .. .8 A- 120
............................................... Wiper/Washers .8 A-90
Electronic Glare Control Mirror
........................ 9G-4
.......................... Electronic Instrument Cluster 86-4, 6
Emissions and Driveability
....................................... Fuel Injection (Port) 6E3- 1
....................................... Fuel Injection (TB1) 6E2-1
Engine
.... V-6 2.8L VIN CODE S RPO (LB8) Section 6A2
.... V-8 5.OL VIN E and F, 5.7L VIN 8 Section 6A3
................................................. Cooling Section 6B
Engine Specifications
............................................................ V-6 6A2-26
............................................................. V-8 683-28
General Description
.............................................................. V-6 61 ............................................................. V-8 6A3-1
Lubrication System ........................................................... V-6 ..6A 2- 1
................................................................ V-8 6A3-2
Multi-port Fuel Injection
..................................................... VIN S 8A-20-0
................................................. VIN 8 8A-23-0
............ Throttle Body Injection (VIN E) 8A-22-0
................ Tuned Port Injection (VIN F) 8A-2 1-0
On-Vehicle Service Camshaft
......................................................... V-6 6A2-16
................................ ..................... V-8 .. 6A3-16
Camshaft Bearings
......................................................... V-6 6A2-16
...................................................... V-8 ..6A 3-17
Connecting Rod Bearings
......................................................... V-6 .6A 2- 18
................................................... V-8 6A3-13
...................... Crankcase (Front Cover) .6A
2- 15
............ Crankcase/Camshaft Sensors Section 6E3
Crankshaft
....................................................... V-6 6A2-25
......................................................... V-8 .6A 3-28
......................................... Cylinder Block .6A 3-26
Cylinder Head
.......................................................... V-6 682-12
.......................................................... V-8 6A3-11
Dipstick Tube .............................................. 6A3-7
Engine Assembly
....................................................... V-6 6212
.......................................................... V-8 6A3-27
Exhaust Manifold
........................................................ V-6 .6A 2-9
V-8
....................................................... 6A3-7

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

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