1988 PONTIAC FIERO Service Repair Manual

1 ti-8 GENERAL INFORMATION - F STYLE
5. Apply deadeners (as indicated by original
application pattern).
6. Apply anticorrosion compounds.
9. Apply underbody rustproofing material.
Cleaning of interior and underbody panel
surfaces is necessary when original galvanized or other
anticorrosion materials have been burned off during
welding or heating operations. Removal of the residue
left from burning will require additional care in such
areas as interior surfaces of box-type construction and
when configurations of the metal panels limit access to
interior surfaces. One or more of the following methods
will remove the residue.
CAUTION: Standard shop practices,
particularly eye protection, should be
followed during these operations to
avoid personal injury.
Where access is possible, scraping can be used. If
a standard putty knife or scraper will not fit into
the affected area, consider fabricating a small,
flexible scraper from a narrow piece of sheet
metal.
e A jet of compressed air will remove most residue
and could be most effective in limited-access
areas. Eye protection is absolutely necessary in an
operation of this type.
e Sandblasting is most effective and should be used
when the equipment is available and access to the
area is good. Sandblasting is an excellent method
for cleanup and preparation of open joints,
underbody components and hem flange areas.
e Wire brushing (power and by hand).
e When access is good, sandpaper and steel wool
can be used.
ANTICORROSION COMPOUND AROUND ENTIRE PERIMETER OF LID INNER TO OUTER (HEM FLANGE AREA) ' ATTACHMENT AND DARKENED AREAS
Fig. IS-Typical Anticorrosion Treatment to Interior of Rear Compartment
CHIP RESISTANT PLASTISOL
MATERIAL
A chip resistant plastisol material is applied to
specific lower areas of the body prior to color coat
application on some cars. The presence of the applied
material can be detected through visual inspection. If
the production-applied, chip resistant plastisol
*REAR END PANEL A"'
10 FLOOR PAN
Fig. 20-Typical Joint Sealing, Rear End Area(s)
UNDERSIDE OF WHEELHOUSE
AND FLOOR PAN EXTENSION
WHEELHOUSE QUARTER
OUTER
.
SEALER APPLICATION
AT ALL JOINTS
692964-1.80
Fig. 2 1-Typical Deadener and Sealer Application,
Wheelhouse Area

GENERAL INFORMATION - F STYLE 1 H-9
ENTIRE PERIMETER OF HOOD OUTER-TO-INNER
PANEL FLANGES. CARE SHOULD BE TAKEN TO INSURE GOOD
PENETRATION BETWEEN
PANELS.
MEDIUM-BODIED SEALER
Fig. 22-Typical Hood Panel Sealer Application
Fig. 23-Typical Fender Anticorrosion Compound
Application
material requires replacement, a chip resistant air dry
vinyl plastisol that is solvent borne and sprayable is
available for field use.
The following materials can be used for refinish
operations. Follow material manufacturer's label
directions for application.
s Acme Gravel Guard #559 or equivalent - 1
quart container
@ Rodgers Vinyl Gravel Guard #4559 or
equivalent
- 1 quart container
@ Sherwin-Williams Vinyl Gravel Guard
#GlW295 or equivalent - 1 quart container
e Tuff-Kote #I077 or equivalent - 1 quart
container
Equipment necessary for repair in addition to the
above materials:
Sandpaper
- #80 Grit
Portable heat lamp or heat gun
e Extension cord
e Clean shop towel
e Conventional hand spray gun with pressure feed
cup attached
(DeVilbiss, J.G.A., Binks or
equivalent)
s Putty knife
FLEXIBLE EXTERIOR PLASTIC PARTS
REPAIR AND
REFlNlSHlNG (EXCEPT
E/P OR TPO)
Soft plastic parts used for exterior or cosmetic
application are compounded of resins that have flexible
characteristics in order to absorb minor impact
without sustaining damage. Typical examples include
bumpers, front end fascia or side panels such as
fenders. These parts are generally fabricated of
thermosetting plastics which, when cured, cannot be
melted with application of heat such as through hot air
welding. However, if the impact force is great enough
to create damage, thermoset plastics can be
successfully repaired with structural adhesives.
Briefly, the repair system amounts to a filling
and, where necessary, a reinforcing operation. After
curing, the patch is dressed to conform to the
surrounding contour.
Following are typical damage conditions and
respective repair procedures:
1. Gouge or puncture repair
a. Clean the repair area with a wax, grease and
silicone-removing solvent applied with a
water-dampened cloth. Wipe dry. With a
random orbit sander fitted with a
# 180 grit
disc, remove the paint film in and
surrounding the area to be filled. The repair
material should
not overlap the painted
surface (Fig. 24).
Fig. 24-Removing Paint Surrounding Damage
b. Use a clean 2" or 3" # 50 grit disc to enlarge
the gouge or puncture in order to ensure
removal of grease, oil or dirt from the area
to be contacted by the repair material. This
action should also create at least a 25 mm
(1
") taper around the damage for extended
contact between the repair material and
substrate. Remove all dust and loose
particles from the repair area (Fig. 25).
Aluminum
Autobody Repair Tape (3M
#06935, &to6936 or equivalent) can be
used on the back side of a puncture
to
support the repair material (Fig. 26).

1 W-10 GENERAL INFORMATION - F STYLE
Fig. 25-Tapering Substrate Surrounding Damage
Fig. 26-Tape Support for Repair Material
c. On a clean, flat surface of nonporous
material such as metal, glass or plastic,
deposit equal length beads of each
component (3M Flexible Parts Repair
Material
#05900 or 3M Brand Structural
Adhesive
#08101 or equivalent). With a
paddling motion, mix the two components
until a uniform color and consistency is
achieved (Fig. 27).
d. Apply the mixed repair material with a
squeegee or plastic spreader. Apply a light
coat over the entire area; then continue
application to a level slightly above the
surrounding contour. Allow the mixture to
cure 20 to 30 minutes at 16°C to 27°C (60°F
to 80°F). If low areas or pits remain, mix
and spread additional adhesive or use 3M
Flexible Parts Putty
#05903 or equivalent
(Fig. 28).
e. Establish rough contour where possible
with a curved tooth body file. Follow by
block sanding using
#220 sandpaper to
establish accurate level and contour with
the surrounding surface (Figs. 29 and 30).
For final feathering, use a random orbit
sander with a
#320 disc.
Fig. 27-Measuring Two-Component Repair Material
Fig. 29-Establishing Rough Contour with
Body File
When a piece of attaching surface of a part is
cracked or broken away as in Figure 31,
structural strength may be restored as follows:
a. Align and secure the piece on the face side
with body tape and clamp (Fig.
32). 2. Structural type repair

GENERAL INFORMATION - F STYLE 1 N-1 l
Fig. 30-Block Sanding for Accurate Contour
Fig. 33-Discing Back Side of Damage
Fig. 32-Aligning Damage with Tape and Clamp
b. Clean the underside of the repair area as in
step la. Sand each side of the break with a
#50 grit disc (Fig. 33).
c. Cut a piece of fiberglass cloth large enough
to overlap the break 38 mm
(1-1/27 (Fig.
34).
d. As in step lc, thoroughly mix a quantity of
adhesive and apply a layer of the mixture
approximately 3 mm
(1/8") thick on the
back side of the part overlapping the break
at least 38 mm
(1-1/2") as in Figure 35.
Fig. 35-Applying Repair Material - Back Side of Damage
e.
Apply the precut fiberglass cloth to the
adhesive and immediately cover the cloth

1 H-12 GENERAL INFORMATION - F STYLE
with additional adhesive in sufficient
quantity to fill the weave (Figs. 36 and 37).
f. Allow
20-30 minutes cure time at 16°C to
27°C (60°F to 80°F). Trim excess repair
material at edge if necessary.
g. Repair
the face side of the area following
steps la through le.
Fig. 36-Applying Fiberglass Cloth to Repair Material
Fig. 37-Filling Fiberglass Cloth
3. Paint repair
The original factory applied paint finish on
flexible exterior plastic parts is in most cases
baked elastomeric enamel. However, for repair, either a lacquer or enamel system may be used;
but
both primer, when required, and color coats
must have elastomeric or flexible properties.
There is a wide choice of flexible paint systems
available for service use; however, many require
additives containing isocyanates. Be certain to
follow all recommendations and warnings listed
on the container labels for materials selected.
Following is a list of some of the products
available for painting flexible plastic parts:
DuPont Dexlar Flexible Finish (Lucite " B" color suffix
plus Dexlar 365 B plus 792-S Hardener),
Rinshed-Mason Flex Agent 891 (additive for
R-M acrylic lacquer and primer surfacer), Ditzler
Flexative DX-369 (additive for Ditzler acrylic
lacquer and enamel), Ditzler Elastomeric Primer
DPX 844 (requires DTX 895 Thinner),
Sherwin-Williams Acrylic Flex Additive
V2V297
(additive for S-W acrylic lacquer), 3M Flexible
Parts Coating
kt05905 or other equivalent
products.
CAUTION: If the paint system
selected specifies an additive
containing isocyanates, it is
mandatory that adequate respiratory
protection be worn. An example of
such protection is an air line respirator
with a full hood or half mask.
If not
available, use a
vapor/particulate
respirator that the respirator supplier
recommends as effective for
isocyanate vapors and mists (unless
local regulations prevail).
Color coat the entire component. Spot repair is
not recommended.
a. Clean the entire part with a wax, grease and
silicone-removing solvent applied with a
water-dampened cloth. Wipe dry.
b. Featheredge the repair with
#320
sandpaper, blow off dust and tack.
c. Mix and apply four medium coats of flexible
primer surfacer (R-M or equivalent). Allow
each coat to flash.
o 2 parts APS Primer-Surfacer or
equivalent
s 1 part 891 Flex Agent or equivalent
o 3 parts PNT 62 or equivalent
Allow to dry at least one hour and block
sand with
#400 sandpaper.
For color coat only operations, omit steps
b
and c.
d.
Thoroughly sand the entire part with
#400 sandpaper to remove all gloss.
Reclean as in step a.
e. Mix the color, flexible additive and solvent
(R-M or equivalent) as follows:
e 1 part Alpha-Cry1 or equivalent
e 1 part 891 Flex Agent or equivalent
o 1/2 part PNT 88 or PNT 90 or
equivalent
f. Apply a sufficient number of coats to
achieve complete hiding and color match.
The topcoat mixture will dry to the touch
in about one hour.
E/P OR TPO REPAIR
1. Clean repair area with wax, grease and silicone
removing solvent. Wipe dry.
2. Use
a 2" or 3" #50 grit disc to enlarge the
damaged area.
3. With a random
orbit sander fitted with a
# 180
grit disc, sand the damaged area and remove
the
paint film from the surrounding area to be filled.

GENERAL INFORMATION 5 F STYLE 1H-13
4. Prime entire area with 3M Polyolefin Adhesion
Promoter Part
kt05907 or equivalent before
filling with 3M Flexible Parts Repair Material
kt05900 or equivalent.
5. Shape repair material with curved body tooth file.
Then block sand with
#220 grit disc and final
featheredge with
#320 grit disc.
6. If low areas or pits remain, first reapply 3M
Polyolefin Adhesion Promoter or equivalent,
then mix and spread additional repair material.
Painting Flexible Parts - E/P or TPO
When painting flexible plastic exterior parts
identified as E/P or TPO, a polypropylene primer
must be used. Follow manufacturer's label
instructions.
METAL REPLACEMENWARTS
FINISHING
Metal service replacement parts (or assemblies)
are painted with a high-bake factory primer. For
proper adhesion of color coats in service, the following
refinish steps are necessary.
1. Clean part with a wax and grease-removing
solvent such as Prep-sol, Pre-Kleano,
Sher-Will-Clean, Acryli-Clean or equivalent.
2. Scuff-sand panel lightly with wet or dry no. 400
sandpaper and water. Avoid cut-throughs.
Reclean part. Apply sealer to entire part.
3. If factory primer coat was cut through, apply
metal conditioner to exposed bare metal. Follow
label directions.
4. Apply primer-surfacer to entire part; allow to dry
thoroughly before sanding. Follow label
directions for drying time.
5. Sand primer-surfacer using wet or dry no. 400
sandpaper and water. Do not sand sealer.
6. Reclean part.
7. Apply color coats to parts.
8. Follow label directions for drying time before
compounding.
9. Compound part by hand or with power
equipment.
10. Nonsealing polish may
be applied after rub-out if
desired. Waxes, however, should
not be applied
until the paint finish has aged at least two
months.
Prior to replacing exterior body parts or
assemblies, check condition of paint on all covered or
hidden interior surfaces.
If rust scale is found in these
areas, proceed as follows:
1. Remove rust with suitable wire brush, abrasive or
liquid rust removing agent. Follow label
directions.
2. If necessary, wash with detergent, rinse and dry.
3. Apply a heavy coating of anticorrosion
compound to all cleaned hidden surfaces before
installing exterior body parts. Also, apply
anticorrosion compound to all inner surfaces of
exterior body parts being installed.
INTERIOR PLASTBC TRIk7 PARTS
FINISHING
Paintable plastic interior trim components can be
divided into three general types:
Polypropylene Plastic
@ ABS Plastic
e Vinyl Plastic
It is important for a painter to be able to identify
each plastic in order to paint it satisfactorily. Painting
of complete soft seat cushion and
seatback trim cover
assemblies of vinyl construction is not approved by the
factory. Excluding the soft seat cushion and seat back
trim cover assemblies, the plastic used most widely on
the interior of bodies is polypropylene.
The purpose of the following tests is to determine
the identity of a given plastic so that proper paint
procedures and materials can be used.
Pest for Polypropylene and ABS Plastic
To determine if a service part to be painted is
polypropylene or
ABS plastic, perform the following
burn test:
1. From a hidden backside portion of the part,
remove a sliver of plastic with a sharp blade.
2. While holding the sliver of plastic with tweezers
or laying it on a clean noncombustible surface,
ignite the plastic.
3. Observe the burning plastic closely:
a. Polypropylene burns with no readily visible
smoke.
b. ABS plastic burns with a readily visible
black smoke residue which hangs
temporarily in the air.
Pest for Vinyl Plastic
To determine if a part to be painted is vinyl plastic
(polyvinyl chloride), a copper wire test should be
performed as follows:
1. Heat a copper wire in a suitable flame such as
provided by a propane or equivalent torch until
the wire glows (turns red).
2. Touch the heated wire to the backside or hidden
surface of the part being
testsd in a manner so as
to retain some of the plastic on
the wire.
3. Return the wire (and retained plastic) to the
flame and observe for a green, turquoise blue
flame. A flame in this color range indicates that
the plastic being tested is vinyl.
4. If black smoke residue, which hangs temporarily
in the air, is readily visible when wire (with
retained plastic residue) is returned to the flame,
the part is made of flexible (soft)
ABS plastic
material.
PAINTING POLYPROPYLENE PLASTIC PARTS
The system for painting polypropylene parts
involves the use of a special primer. Since
polypropylene plastic is hard, it can be
color coated
after prime with conventional interior acrylic lacquer.

1 H-14 GENERAL INFORMATION - F STYLE
NOTICE: Service part must be primed with a
coating of special polypropylene primer according
to factory recommendations. Failure to use the
required primer as directed will result in color coat
lifting and/or peeling problems. Use
Polypropylene Primer, part no. 1052364, or
equivalent.
1. Wash part with a solvent such as Acryli-Clean,
Pre-Kleano, Prep-Sol or equivalent. Follow label
directions.
2. Apply
a thin, wet coat of polypropylene primer
according to label directions. Wetness of primer
is determined by observing gloss reflection of
spray application in adequate lighting. Be sure
primer application includes all edges. Allow
primer to flash dry one minute minimum and ten
minutes maximum.
3. During the above flash time period (1 to 10
minutes), apply conventional interior acrylic
lacquer color as required and allow to dry before
installing part. Application of color during above
flash time range promotes best adhesion of color
coats.
PAINTING RIGID OR HARD ABS PLASTIC
PARTS
Rigid or hard ABS plastic requires no primer.
Conventional interior acrylic lacquers adhere
satisfactorily to hard ABS plastics.
1. Wash part with a solvent such as ~cr~li-clean,
Pre-Kleano, Prep-Sol or equivalent.
2. Apply conventional interior acrylic lacquer color
according to trim combination (see paint supplier
color chart for trim and color code). Apply only
enough color for proper hiding to avoid washout
of "grain" effect.
3. Allow to dry following label directions and then
install part.
PAINTING VINYL AND FLEXIBLE (SOFT) ABS
PLASTIC PARTS
The outer cover material of flexible instrument
panel cover assemblies is made mostly of ABS plastic
modified with PVC or vinyl. The same is true of many
padded door trim assemblies. The soft cushion padding
under
ABS covers is urethane foam plastic.
The most widely used flexible vinyls (polyvinyl
chloride) are coated fabrics as used in seat trim, some
door trim assemblies, headlinings and sunshades. Most
head restraints are covered with flexible vinyls.
Examples of hard vinyls are door and front
seatback
assist handles, coat hooks and exterior molding inserts. The
paint system for vinyl and flexible
ABS
plastic involves the use of interior vinyl color and a
clear vinyl top coat, No primer or primer-sealer is
required.
1. Wash part with a vinyl cleaning and preparation
solvent, such as Vinyl Prep, Vinyl Prep
Conditioner or equivalent. Wipe off cleaner while
still wet with clean, lint-free cloth.
2. As soon as the surface has been wiped dry, apply
interior vinyl color in wet coats. Allow flash time
between coats. Follow label directions. Use
proper vinyl color as shown by interior trim code
combination. Apply only enough color for proper
hiding to avoid washout of grain effect.
3. Before color flashes completely, apply one wet
double coat of vinyl clear top coat. Use top coat
with appropriate gloss level to match adjacent
similar components. The clear coat is necessary
to control the gloss requirement and to prevent
crocking (rubbing-off) of the color coat after
drying.
4. Allow to dry according to label directions before
installing part.
AVAILABILITY OF COLORS FOR PAINTING
INTERIOR PLASTIC PARTS
Interior colors are color keyed to trim code
combination numbers located on the body number
plate or service parts identification label.
Conventional interior acrylic lacquer colors are
designed for use only on hard trim parts, such as:
1. Steel parts (primer and/or sealer required on new
service parts)
2. Hard
ABS plastic (no primer necessary)
3. Hard polypropylene plastic (special primer
required)
Each major paint supplier provides an interior
color chart which identifies the stock number, color
name, gloss factor and trim code combination number
for each conventional interior color.
Vinyl interior colors are designed for soft trim
parts such as instrument panel cover assemblies, door
trim assemblies and head restraints. These colors
require a final top coat of clear vinyl. Instrument panel
covers require a nonglare final top coat. Other trim
parts require a degree of gloss to match similar
adjacent parts. Use interior vinyl colors and clear vinyl
finishes such as Ditzler Vinyl Spray Colors, American
Jetway UR-1 Vynicolor or equivalents.
SPECIAL BODY TOOLS
Figure 38 shows the special body tools that are
recommended as aids in servicing the various body
components. Equivalent tools may be substituted.

GENERAL INFORMATION - F STYLE 1H-45
1. J-21104 WEATHERSTRIP REMOVING TOOL
2.
J-23457 OR BT-7107 DOOR LOCK
STRIKER, SEAT BELT ANCHOR BOLT
REMOVING TOOL
3. J-8888 DOOR HANDLE CLIP REMOVlNG
4. J-245BSB OR BT-73238 TRIM PAD
REMOVER
5.
J-28625-1 RIGHT FRONT DOOR HINGE
SPRING TOOL
6.
J-28625-2 LEFT FRONT DOOR HINGE
SPRING TOOL
7. J-244402-A STATIONARY GLASS
REMOVER
Fig. 38 - Special Body Tools