PONTIAC FIERO 1988 Service User Guide

08-8 GENERAL INFORMATION
USE OF METRIC AND CUSTOMARY NUTS, BOLTS AND SCRERS
Some veh~cles present spec~al servlce requ~rements to the technrc~a~l due to the use of both metnc and cus-
tomary
(Inch) type nuts, bolt5 and screws. Many are metnc and some are very close in d~mens~on to custom-
ary nuts. bolts and screws in the
Inch system M~smatched or Incorect nut5, bolt5 and screus can result rn
damage, malfunct~on or poss~ble personal Injury Nuts. bolts and screws removed from the veh~cle 5hould be
saved for re-use
uhenever poscrble. If they are not re-usable. care should be taken to select a replacement
that matches the
ong~nal.
General Motors Eng~neenng Standards have ddopted a portion of the standard metnc fastener slzes defined
by SI (Systeme
Internatronal) Th~s was done to reduce the number of srzes used and yet retarn the best
strength
character~st~cs In each thtead size. For example. the customary 114-20 and 1/4-28 screws are replaced
by the
metrlc M6.3 x I screw wh~ch has nearly the same d~ameter and 25.4 threads per inch. The thread p~tch
IS In between the customary coarse and fine thread prtches.
Metnc and customary thread notatlon d~ffer sl~ghtly. The d~fference IS ~llustrated belou.
CUSTOMARY METRIC
Thread Major Thread Major
D~ameter D~ameter
~n inches rn M~ll~meters
Number of D~stance
Threads Between Threads
in Mill~meters
Care should be taken when servlclng the veh~cle to guard agalnst cross thread~ng or Improper retention due to
interchanged metnc and inch nuts and bolts.
When
obtarn~ng metnc or customary nuts, bolts, and screws locally for servrcing the vehicle. care must be
exerc~sed in selecting parts that are equrvalent to the ong~nal parts In dimensions. strength. and p~tch of
Fig. OA-10 -- Metric Information, Chart A

GENERAL INFORMATION OA-9
REUSE OF PREVAILING "TRQUE NUT AND BOLT
WASHER NYLON STRIP OR PATC
I
A. CLEAN, llNRUSTFD PREVAILING TORQllF BOLTS AND NL'TS MAY Bk. REUSED AS FOLL.0WS I I. CLEAN DIRT AND OTHER FORFICN MATERIAL OFF NUT AND BOLT. 2, INSPECT BOLT
AND NUT TO ASSURE THERE ARE NO CRACKS. ELONGATION OR OTHER SIGNS OF ABUSE OR OVERTIGIiTENING. LIGHTLY LUBRICATE THREADS. (IF
ANY DOUBT, REPLACE WITH NEW PREVAILING TOROLE FASTENER OF EQUAL OR
GREATER STRENGTH.)
3. ASSFMBLE PARTS AND START BOLT OR NLIT. 4. OBSERVE THAT BEFORE FASTENER SkATS. IT DEVk.LOPS PREVAILING TORQUE PER
CHART BELOW. (IF ANY DOUBT, INSTALL NliW PRFVAILIN(; TORQL'F FASTENER OF
EQUAL OR GREATER STRENGTH).
5. TIGHTEN TO TORQUE SPECIFIED IN SERVl('k MANl'AL,

OA-10 GENERAL INFORMATION
METRIC BOLT AND NUT IDENTIFICATION
Common metric fastener strength property
classss are 9.8 and 10.9 with the clers idsntifica$ion
embossed on the haad of each bolt. Customary (inch) strength clases range from grade 2 to 8 wi(h
line ihntificaion embosssd on each bolt head. Markings correspond to two lines lsss than the
actual grade
(i.e. grade 7 bolt will exhibit 5 embossd lines on the bolt head). Some metric nuts will be markd with single digit strength identification numbers on the nut face. The following figure
illustr&es the different strength markings.
Customary (~nch) bolts - ldent~f~cat~on marks correspond to bolt
strength - lncreas~ng numbers represent lncreaslng strength.
Metr~c Bolts - ldent~f~cat~on class numbers correspond to bolt
strength - lncreas~ng numbers represent lncreaslng strength.
MANUFACTURERS NUT STRENGTH
IDENTIFICATION IDENTI FlCATlON
POSlDRlV
Fig. OA-12 -- Metric Information, Chart C

SI METRIC-CUSTOMARY CONVERSION TABLE
to get equivalent
by nurnber of: Multiply
to get equivalent
by number ol: Multiply
LENGTH ACCELERATION
Inch Foot
Yard
Mile millimeters (mm)
meters (m) meters
kilometers (km) TORQUE
AREA
newton-meters (N-m) newton-meters
millimeters2 (mm2) centimeters2 (cm2 ) meters' (m2) meters2
POWER
Horsepower
VOLUME PRESSURE
OR STRESS
3.377 6.895
mm3 cm3
liters (I)
liters
liters
meters3
(ma)
Inches of mercury
Poundslsq. in. kilopascals (kPa) kilopascals
Quart
Gallon
Yard3
ENERGY OR WORK
BTU
Foot-pound
Kilowatt-hour joules
(J)
joules
joules (J
= one W's) MASS
Pound
Ton Ton kilograms
(kg)
kilograms (kg)
tonne (t)
Foot candle
FORCE
FUEL PERFORMANCE
Kilogram
Ounce Pound newtons (N) newtons
newtons Mileslgal Gallmile kilometerslliter (km/l) literslkilometer (Ilkm)
TEMPERATURE
VELOCITY
1.609 Degree Fahrenheit
degree Celsius (C) Mileslhour

OA-12 GENERAL INFORMATION
DECIMAL AND METRIC EQUIVALENTS
Fractions Decimal Metric Fractions Decimal
In
. MM . In .
Metric MM
.
Fig . OA-14 ..Metric Information, Chart E

- -
GENERAL INFORMATION OA-13
LIST OF AUTOMOTIVE ABBREVIATIONS
WHICH MAY
BE USED IN THIS MANUAL
A-6 - Axial 6 Cyl. A C Compressor AIC - Air Conditioning
ACC - Auto'matic Climate Control
EMF
- Electromotive Force PAIR - Pulse Air Injection Reaction System
EMR - Electronic Module Retard
P B - Power Brakes
EOS - Exhaust Oxygen Sensor
PCV - Positive Crankcase Ventilation
ESC - Electronic Spark Control
PECV - Power Enrichment Control Valve
APT
- Adjustable Part Throttle
AT - Automatic Transmission
ATC - Automatic Temperature Control
ATDC
- After Top Dead Center
FMVSS
- Federal Motor Vehicle Safety BAR0 - Barometric Absolute Pressure Sensor
Ft. Lb. - Foot Pounds (Torque)
Bat. + - Positive Terminal FWD - Front Wheel Drive
- Four Wheel Drive
BHP - Brake Horsepower 4 x 4 - Four Wheel Drive
BP - Back Pressure
BTDC - Before Top Dead Center
HD - Heavy Duty HE1 - High Energy Ignition
Cat. Conv. - Catalytic Converter
CC - Catalytic Converter
- Cubic Centimeter - Converter Clutch
CCC - Computer Command Control
HVM
- Heater-Vent-Module
IAC
- ldle Air Control CCOT - Cycling Clutch (Orifice) Tube IC - Integrated Circuit CCP - Controlled Canister Purge
ID - Identification
C.E. - Check Engine - Inside Diameter
CEAB - Cold Engine Airbleed ILC - Idle Load Compensator
CEMF - Counter Electromotive Force I/P - Instrument Panel
CID - Cubic Inch Displacement ISC - Idle Speed Control CLOOp - Closed Loop
CLCC - Closed Loop Carburetor Control km - Kilometers
CP
- Canister Purge kmiL - Kilometers Liter (mpg) Cu. In. - Cubic Inch kPa - Kilopascals
CV - Constant Velocity
Cyl.
- Cylinder(s)
L-4 - Four Cylinder In-Line (Engine)
DBB - Dual Bed Bead L-6 - Six Cylinder In-Line (Engine)
DBM - Dual Bed Monolith
LF - Left Front DEFl - Digital Electronic Fuel Injection LR - Left Rear DFI - Digital Fuel Injection
Diff. - Differential Man. Vac. - Manifold Vacuum Distr. - Distributor MAP - Manifold Absolute Pressure
EAC
- Electric Air Control Valve
EAS - Electric Air Switching Valve MPG - Miles Per Gallon
ECC - Electronic Comfort Control
MPH - Miles Per Hour
ECM - Electronic Control Module MT - Manual Transmission
N.m - Newton Metres (Torque)
Emission Control
Fig. 014-15 -- Common Abbreviations

0.4-14 GENERAL INFORMATION
SERVICE PARE SlDENTlFlGATlON LABEL
The Service Parts Identification Label provides identifi- fixed to the inside of each passenger car vehicle at the
cation of vehicle equipment to assist in servicing and assembly plant.
determining replacement parts, Included on this label
will be regular production options
(RPO's) as well as For
additional information on the Service Parts Identifi-
standard and mandatory options. The label will be af- cation
Label, see a GM Parts Catalog.
VEHICLE ---f IDENTIFICATION
NUMBER lGlAZ3799ER157148 1JD69
ARL A02 A65 BGY B9A B9K C60 Dl0 D35 E5Z E6E E9Z FLT GU1 JM7
<19
KG4 LC3 MX1 M31 NA5 NB1 OMX VK3 VC2 VY1 VY4 V73 Y19 ZJ7
GBJ 62L 62U 67D 671 679 7BJ 8HJ 9HJ
BBPBBBBPPB EXAMPLE -
DIS. LACQUER WA-L8240 U8240 A4721
i
BODY TYPE STYLE
OPTION CONTENT
PAINT
TECHNOLO(IY SOLUTION LACOUEH DlSPEHSlON LACOUEH
HIGH SOLIDS EN4MEL
VINYL FOP CCIl.Oli IlF AI'I'LICAHLZI
\VA CERBORNE ENAI.ICL I'AINT LOULS APd[J LOLATIONS I BASECOAT CLCAl3C04T L LfJIVEIi L:C)UY COLOII 1lilP.1 U UPI'CH f!O[IY (,OLCJII ~,lJP.ll~lPl/~ llO'J', A hllI1ULf L!O[)Y OII ACCCNT COLOF? ISTHIPINO CTC. I
LABEL LOCATION
Fig. OA-16 Service Parts Idcnt~frcation Label

MAINTENANCE AND LUBRICATION OB-1
SECTION OB
NTENANCE AND LUBR
CONTENTS
Maintenance Schedule, Gasoline .............................................. OB-l
Maintenance Schedules I and 11 .............................................. OB-2
Owner Inspections
......................................................... OB-3
Recommended Fluids and Lubricants ......................................... OB-6
PASSENGER CAR MAINTENANCE SCHEDULE
VEHICLES
WITH GASOLINE ENGINE
NORMAL CAR USE ITEM 4
The maintenance services contained in Schedules I Carburetor or Throttle Body Mounting Bolt
and 11 are based on the assumption that your car will be Torque* used as designed:
Check torque of mounting bolts and/or nuts. @ To carry passengers and cargo within the limits
shown on the Tire Placard located on the edge of the ITEM 5 driver's door.
@ On reasonable road surfaces within legal driving Engine Idle Speed Adjustment*
limits. (Engines
without Idle Speed Control or Idle Air
Control) - Adjust to specifications shown on the under- @ On unleaded gasoline.
hood label. If no specifications are shown on the label, no
adjustment is necessary. Calibrated test equipment must
EXPLANATION OF SCHEDULED MAINTENANCE be used. SERVICES
The services listed in Maintenance Scheduies I and ITEM 6
11 are further explained below. When the following main- ~i~~ and wheel aotation tenance services are performed, make sure all parts are
replaced and all necessary repairs are done before driving To equalize wear and obtain maximum tire life,
your car. Be sure to use the proper fluid and lubricants as rotate in accordance with patterns shown in Owner's
shown in Figure OB-2. Manual.
ITEM 1
Engine Oil and Oil Filter Change*
ALWAYS USE SFICC OR SF/CD ENERGY CON-
SERVING OILS OF PROPER VISCOSITY
- Also.
always change oil and filter as soon as possible after
driving in a dust storm. See your Owner's Manual for
further details.
ITEM 2
Chassis Lubrication
Lubricate all grease fittings in suspension and steer-
ing linkage. Lubricate
transmissionltransaxle shift
linkage, parking brake cable guides, underbody contact
points and linkage. Also lubricate clutch cross shaft lever
every
30,000 miles (50 000 km) on rear-wheel-drive cars
only.
ITEM 3
Carburetor Choke and Hoses*
If your car is equipped with a carburetor, verify that
choke and vacuum break work properly and are within
specifications. Correct any binding caused by damage or
gum on the choke shaft. Inspect hoses for proper hookup,
cracks, chafing or decay. Correct as necessary.
Vacuum or A.I.R. Pump Drive Belt Inspection*
When a separate belt is used to drive the vacuum or
A.I.R.
pump, inspect it for cracks, fraying, wear and
proper tension. Adjust or replace as needed.
ITEM 8
Cooling System Service*
Drain, flush and refill system with new coolant. See
your Owner's Manual
for further details.
ITEM 9
Wheel Bearing Repack (Rear-Wheel-Drive Cars
Only Except Corvette)
Clean and repack front wheel bearings at each brake
relining or 15,000 miles
(25 000 km), whichever comes
first, when car is used in such service as police, taxi or
door-to-door delivery. If you do not use your car in such
service, clean and repack bearings at each brake relining
or 30,000 miles
(50 000 km), whichever comes first.
Corvette models do not require wheel bearing repack.

OB-2 MAINTENANCE AND LUBRICATION
Select and follow Schedule I or Schedule I1 based on how you use your car:
SCHEDULE I
Follow Schedule I if your car is mainly operated under one or moreof the following Idling andlor low
speed operation in stop-and-go traffic.
conditions: Towing a trailer.
@ When most trips are less than 4 miles (6 kilometers).
Operating in dusty areas.
When most trips are less than 10 miles (16 kilometers) and outside temperatures
Schedule I should also be followed if the car is used for delivery service,
remain below freezing.
police, taxi or other commercial applications.
TO BE SERVICED
Every
30.000 miles I50 000 km)
Every 30,000 miles I50 000 km) or 36 months
Every
30,000 miles 150 000 km)
SCHEDULE ll
Follow Schedule II only if none of the driving conditions specified in Schedule I apply.
TO BE SERVICED
At
7 500 miles 12 500 km on1
FOOTNOTES:
I
*An Emission Control Service ttThe U.S. Environmental Protection Agency has determined that the failure to perform this
maintenance item will not nullifv the emission warrantv or limit recall liabilitv orior to the
completion of vehicle useful life. General Motors, however, urges that all recommended main-
tenance services be performed at the indicated intervals and the maintenance be recorded in
section C of the owner's
ma~ntenance schedule.
Figure OB-1 Maintenance Schedules I and I1 - Gasoline Vehicles

F CARLINE
ITEM 10
TransmissionRransaxle Service
The manual transmission or transaxle fluid does not
require changing. (Corvette only.) Change fluid in over-
drive unit every 30,000 miles (50 000 km).
For automatic transmissions or transaxles, change
both the fluid and filter every 15,000 miles (25 000 km) if
the car is mainly driven under one or more of these
conditions:
@ In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
@ In hilly or mountainous terrain.
@ Frequent trailer pulling.
@ Uses such as found in taxi, police car or delivery
service.
If you do not use your car under any of these condi-
tions, change both the fluid and filter every 100,000 miles
(160 000 km). See you Owner's Manual for further
details.
ITEM 11
Spark Plug Service*
Replace spark plugs with type listed in your Owner's
Manual.
ITEM 12
Spark Plug Wire Inspection*
Clean wires and inspect for burns, cracks or other dam-
age. Check the wire boot fit at distributor and at spark plugs.
Replace wires as needed.
ITEM 13
Positive Crankcase Ventilation (PCV) Valve
Inspection*
Inspect valve for proper function. Replace valve if
necessary as well as any worn, plugged or collapsed
hoses.
ITEM 14
EGR System Service*
Conduct EGR System Service as referenced in the
EGR System Chart shown in the appropriate 6E Section.
Also, refer to your GM maintenance schedule booklet for
specific applications.
ITEM 15
Air Cleaner and PCV Filter Replacement*
On 1.6 and 2.0 liter engines, replace every 50,000
miles (80 000 km). On all other engines, replace every
30,000 miles (50 000 km). Replace more often under
dusty conditions. Ask your dealer for the proper replace-
ment interval for your driving conditions.
MAINTENANCE AND LUBRICATION 08-3
ITEM 16
Engine Timing Check*
Adjust timing to underhood label specifications. If
no specifications are shown, no adjustment is needed.
ITEM 17
Fuel Tank, Cap and Lines Inspection*
Inspect fuel tank, cap and lines (including fuel rails
and injection assembly, if so equipped) for damage or
leaks. Inspect fuel cap gasket for an even filler neck
imprint or any damage. Replace parts as needed.
ITEM 18
Thermostatically Controlled Air Cleaner
Inspection*
If your car is equipped, inspect all hoses and ducts
for proper hookup. Make sure valve works properly.
OWNER INSPECTIONS AND SERVICES
Listed below are inspections and services which
should be made by either you or a qualified technician at
the intervals shown to help ensure proper safety, emission
performance and dependability of your car. Take any
problems promptly to your dealer or another qualified
technician for service advice. Whenever repairs are neces-
sary, have them completed at once. For your safety and
that of others, any safety-related parts that could have
been damaged in an accident should be inspected and all
needed repairs should be done before operating your car.
Be sure to use the proper fluids and lubricants as shown in
Figure OB-2.
WHILE OPERATING YOUR VEHICLE
Automatic transmissionltransaxle shift indi-
cator operation - Make sure the indicator points to the
gear chosen.
Horn operation - Blow the horn occasionally to
make sure it works. Check all button locations.
I
Brake system operation -- Be alert to abnormal
sounds, increased brake pedal travel or repeated pulling to
one side when braking. Also, if a brake warning light
comes on or flashes, or the anti-lock warning light (if
equipped) comes on or remains on, something may be
wrong with part of the brake system. Have it inspected and
repaired at once.
Exhaust system operation - Be alert to any
changes in the sound of the system or any smell of fumes.
These are signs the system may be leaking or overheating.
.
Have it inspected and repaired at once. Also see "Engine
Exhaust Gas Caution (Carbon Monoxide)" and "Catalytic
Converter" in your Owner's Manual.
*An Emission Control Service