1988 PONTIAC FIERO sensor

700-W4-56 AUTOMAT lC TRANSMISSION
690 SLEEVE, OUTPUT SHAFT
691 SEAL. OUTPUT SHAFT
Figure 198 Output Shaft Sleeve and Seal
Figure 199 Output Shaft Sleeve
- Installation
35 SEAL, CASE EXTENSION TO CASE
36 EXTENSION CASE
9 9'
i SOME MODELS ILL. ----- - -- - 1
NO. DESCRIPTION
10 CASE, TRANSMISSION
35 SEAL, CASE EXTENSION TO CASE
36 EXTENSION, CASE
37 BOLT, CASE EXTENSION TO CASE
39 SEAL ASSEMBLY, CASE EXTENSION OIL
40 RETAINER, SPEEDO DRIVEN GEAR FITTING
41 BOLT
& WASHER ASSEMBLY
42 SEAL,
"0" RING (SPEEDO FITTING TO
CASE EXTENSION)
43 FITTING ASSEMBLY, SPEEDO DRIVEN GEAR
44 GEAR, SPEEDO DRIVEN
45 GOVERNOR ASSEMBLY
46 COVER, GOVERNOR
99 SPEED SENSOR, INTERNAL TRANSMISSION
100 BOLT, SPEEDO SENSOR RETAINING
687 SHAFT, OUTPUT
688 CLIP, SPEEDO DRIVE GEAR
689 GEAR, SPEEDO DRIVE
690 SLEEVE, OUTPUT SHAFT NOT USED ON
691 SEAL, OUTPUT SHAFT ALL MODELS
Figure 201 Case Extension and Associated Parts
Figure
200 Case Extension and Seal

7A1-2 AUTOMATIC TRANSMISSION ON-VEHICLE SERVICE
Pitting
FLEXPLATE/TORQUE CONVERTER VIBRATION
TEST PROCEDURE
1. Start engine
2. With engine at idle speed and the transmission in
"Park"
(P) or "Neutral" (N), observe vibration.
3. Shut off engine.
Remove or Disconnect
e Flexplate cover attaching bolts
s Flexplate to torque converter attaching
bolts
e Rotate torque converter 120 (1/3 turn)
Install
or Connect
e Flexplate to torque converter attaching
bolts
- Torque bolts to 47 N.m (35 Ibs. ft.)
s Flexplate cover bolts
- Torque bolts to 6 N-m (53 lbs. in.)
4. Start engine and check for vibration. Repeat this
procedure un
ti1 the best possible balance is
obtained.
NOTICE: Some engine/transmission
combinations cannot be balanced in this manner
due to limited clearances between the torque
converter bolts and engine. Be sure bolts do not
bottom out in lug nuts or the torque converter
cover could be dented and cause internal damage.
FLUID LEAK DIAGNOSIS
The cause of most external leaks can generally be
located and repaired with the transmission in the car.
METHODS FOR LOCATING LEAKS
General Method
s Verify that the leak is transmission fluid.
a Thoroughly clean the suspected leak area.
s Operate the car for about 15 miles or until normal
operating temperatures are reached.
e Park the car over clean paper or cardboard.
s Shut off engine and look for fluid spots on paper.
a Make necessary repairs.
Powder Method
e Thoroughly clean the suspected leak area with
solvent.
a Apply an aerosol type powder (foot powder) to
the suspected leak area.
s Operate the car for about 15 miles or until normal
operating temperatues are reached.
s Shut off engine.
e Inspect suspected leak area and trace the leak
path through the powder to find the source.
a Make necessary repairs.
Dye And Black Light Method
A fluid dye and black light kit is available from
various tool manufacturers.
s Follow the manufacturer's recommendations for
the amount of dye to be used.
a Detect the leak with the black light.
e Correct cause of leak.
REPAIRING THE LEAK
Once the leak has been pinpointed and traced
back to its source, the cause of the leak must be
determined in order for it to be repaired properly. If a
gasket is replaced, but the sealing flange is bent, the
new gasket will not repair the leak. The bent flange
must be repaired also. Before attempting to repair a
leak, check to be sure that the following conditions are
correct as they may cause a leak.
Gaskets
s Fluid level/pressure is too high.
e Plugged vent or drain-back holes.
s Improperly torqued fasteners or dirty/damaged
threads.
a Warped flanges or sealing surface.
e Scratches, burrs or other damage to the sealing
surface.
e Damaged or worn gasket.
e Cracking or porosity of the component.
s Improper sealant used (where applicable).
Seals
e Fluid level/pressure is too high.
a Plugged vent or drain-back holes.
s Damaged seal bore (scratched, burred or nicked).
e Damaged or worn seal.
e Improper installation.
a Cracks in component.
e Manual or output shaft surface scratched, nicked
or damaged.
a Loose or worn bearing causing excess seal wear.
Possible Points of Oil Leak
I. Transmission/Transmission oil pan :
Attaching bolts not correctly torqued
s Improperly installed or damaged gasket
s Oil pan or mounting face not flat
2, Case Leak :
@ Filler pipe "multi-lip seal" damaged or
missing
a Filler pipe bracket mislocated
s T.V. cable "multi-lip" seal missing,
damaged or improperly installed
a Governor cover or "0" ring damaged or
missing
@ Speedometer driven gear/speed sensor seal
damaged
e Manual shaft seal damaged
s Oil cooler connector fittings loose or
damaged

AUTOMATIC TMNSMISSION ON-VEHICLE SERVICE 7A1-3
e Propeller shaft oil seal worn or damaged
o Governor cover
e Line pressure pipe plug loose
@ Porous casting
3. Leak at converter end:
Converter seal damaged
- Seal lip cut. (Check converter hub for
damage.)
- Bushing moved forward and damaged
- Garter spring missing from seal
o Converter leak in weld area. (Refer to
Torque Converter.)
Porous casting (Case or pump)
4. Fluid comes out vent pipe or fill tube:
Over-filled
Water or coolant in fluid. Fluid will appear
milky.
e Case porous
e Incorrect fluid level indicator
e Plugged vent
e Drain back holes plugged
Mispositioned oil pump to case gasket (if
equipped)
Case Porosity Repair
1. Clean the leak area with solvent and air dry.
CAUTION: Epoxy adhesive may cause
skin irritations and eye damage. Read
and follow all information on the
container label as provided by the
manufacturer.
2. Mix a sufficient amount of epoxy adhesive,
# 1052533, or equivalent, following the
manufacturer's recommendations.
3. While the transmission case is hot, apply epoxy
adhesive with a clean, dry soldering acid brush.
4. Allow the epoxy adhesive to cure for three hours
before starting the engine.
5. Repeat fluid leak diagnosis procedures.
TORQUE CONVERTER CLUTCH ELECTRICAL
CONTROLS
The Torque Converter Clutch (TCC) system uses
controls that are internal as well as external to the
transmission. For internal control components of the
TCC system, refer to the I-Iydraulic Diagnosis Section
for for wiring diagrams and switch locations.
The external control components of the TCC
system include:
1. Brake Release Switch - To avoid stalling the
engine when braking, the converter clutch is
released any time the brakes are applied.
2. Electronic Control ModuOe - Receives input
signals and grounds TCC solenoid to apply clutch
when proper operating conditions are met.
3. Throttle Position Sensor - Sends throttle
position information to Electronic Control
Module.
4. Vacuum Sensor - Sends engine vacuum (load)
information to Electronic Control Module.
5. Vehicie Speed Sensor - Sends vehicle speed
information to Electronic Control Module.
6. Coolant Temperature Sensor - Sends engine
coolant temperature information to Electronic
Control Module.
TORQUE CONVERTER CLUTCH DIAGNOSIS
To properly diagnose the Torque Converter
Clutch (TCC) system perform all electrical testing first
and then the hydraulic testing. Refer to the appropriate
Driveability and Emissions Section (6E) for additional
Torque Converter Clutch Information
ON-VEHICLE SERVICE
SI-IIFT CONTROL CABLE
Remove or Disconnect (Fig. 1)
1. Negative battery cable.
2. Raise car, see Section OA.
3. Cable attachments at transmission.
4. Lower car.
5. Console, see Section
8C.
6. Cable at control lever and base.
7. Cable from floor.
install or Connect
1. Cable to floor.
2. Cable at base and control lever.
3. Console, see Section 8C.
4. Place control lever in "NEUTRAL"
5. Raise car.
6. Cable attachments at transmission.
7. Adjust cable.
8. Lower car.
9. Negative battery cable.
Adjust (Fig. 1)
1. Place control lever in "N" (Neutral).
2. Raise car, see Section 0.4.
3. Loosen cable
attachment at shift lever.
4. Rotate shift lever "clockwise" to park detent and
then back to neutral.
5. Tighten cable attachment.
15
N-m (11 lbs. ft.)
Important
Levg must be held out of "PARK" when
torquing nut.
6. Lower car.
7. Check cable adjustment by rotating control lever
thru the detents.
Remove or Disconnect (Fig. 2)
1. Negative battery cable.
2. Console, see Section 8C.
3. Cable at control lever and base.

7A1-12 AUTOMATIC TRANSMISSION ON-VEHICLE SERVICE
SOME MODELS I--- - .-
10 CASE, TRANSMISSION 35 SEAL, CASE EXTENSION TO CASE
36 EXTENSION, CASE 37 BOLT, CASE EXTENSION TO CASE 39 SEAL ASSEMBLY, CASE EXTENSION OIL 40 RETAINER, SPEEDO DRIVEN GEAR FITTING
41 BOLT €31 WASHER ASSEMBLY 42 SEAL, "0" RING (SPEEDO FITTING TO
CASE EXTENSION)
43 FITTING ASSEMBLY, SPEEDO DRIVEN GEAR
44 GEAR, SPEEDO DRIVEN 45 GOVERNOR ASSEMBLY
46 COVER, GOVERNOR
98 NUT, FLANGED HEX
99 SPEED SENSOR, INTERNAL TRANSMISSION
100 STUD, DOUBLE END 687 SHAFT, OUTPUT 688 CLIP, SPEEDO DRIVE GEAR
689 GEAR, SPEEDO DRIVE
690 SLEEVE, OUTPUT SHAFT NOT USED ON 691 SEAL, OUTPUT SHAFT ALL MODELS
FILLER TUBE
Remove or Disconnect (Fig. 1 1)
1. Fluid, level indicator.
2. Raise car and suitably support, see Section OA.
3. Bolt retaining filler tube to transmission.
4. Loosen tube from transmission.
5. Lower car.
6. Pull tube out of car from the top.
Install or Connect
1. Filler tube.
2. Raise car.
3. Locate filler tube on transmission.
- Use new filler tube seal.
4. Filler tube bolt to transmission.
@ 47 N.m (35 lbs, ft.) - V8
@ 75 N-m (55 lbs. ft.) - V6
5. Lower car.
6. Fluid level indicator.
e Check and adjust fluid level, see Section 7A.
e Inspect for leaks.
Fig. 9 Speedometer Drive/Driven Gears
688 CLIP, SPEEDO DRIVE GEAR
689 GEAR, SPEEDO DRIVE
699 ROTOR, INTERNAL TRANSMISSION SPEED
SENSOR
J10007-7A1 -F
Fig. 10 Drive Gear
1. V6- 75 N.rn (55 LBS. FT.) V8-47 N.rn (35 LBS. FT.)
2. FILLER TUBE
3. FLUID LEVEL INDICATOR
4. SEAL
Fig. 11 Filler Tube and Indicator
PRESSURE REGULATOR VALVE
Remove or Disconnect
1. Raise car and suitably support, see Section OA.
2. Drain transmission oil pan.
3. Oil pan and screen.
4. Compress
pressure regulator valve with small
screwdriver.

CONTENTS
ELECTRICAL DIAGNOSIS
Cell
1
2
3
4 5
10
11
12 14
20
21
22
23
30
31
33
34
40
4
1
60
61
62
63
64
65
66
67
68
Index
Introduction
Symbols
Troubleshooting Procedures Repair Procedures
Power Distribution
Fuse Block Details
Light Switch Details
Ground Distribution
Engine:
V6 VIN S
Engine: V8 VIN
F
Engine: V8 VIN E
Engine:
V8 VIN 8
Starter and Charging System
Coolant Fans
Vehicle Speed Sensor
Cruise Control Horns
Brake Warning System
Heater
Defogger
Air Conditioning: System Check
Air Conditioning: Blower Controls
Air Conditioning: Compressor Controls
Air Conditioning: Air Delivery
Air Conditioning: Blower Controls
Air Conditioning: Compressor Controls
Air Conditioning: Air Delivery Cell
77
8
1
82
86 90
9
1
100
102
103
110
111
112
114
117
120
130
133
134
135
141
143
145
150
151
201 202
203
Warnings and Alarms: Chime
Instrument Panel: Gages Cluster
Instrument Panel:
Digital Cluster
Driver Information Center
(DIC)
WiperlWasher
WiperlWasher: Pulse
Headlights
Headlight Doors
Headlights with Lamp Monitor
Exterior Lights
Exterior Lights with Lamp Monitor
Back Up Lights
Interior Lights
Interior Lights Dimming
Power Windows
Power Door Locks
Theft Deterrent
Hatch Release
Hatch Pull-Down
Power Mirrors
Automatic Day-Night Mirror
Lumbar Support
Radio Power Antenna
Component Location Views
Harness Connector Faces
Harness Routing Views

INDEX
Page
................... Front Marker 110-0
...................... Frontpark 110-0
......................... Hazard 110-0
........ Hazard with Lamp Monitor 111-0
..................... Headlights 100-0
........................ Doors 102-0
............ With Lamp Monitor 103-0
................. Nigh Level Stop 110-0
................... License 110.3,11 0.4
Park
........................... 110-0
............... Rear Marker 110.3,11 0.4
stop
........................... 110-1
...................... Tail 110.3,11 0.4
................ Tail with Monitor 111-2
Turn ........................... 110-0
Lights (Interior)
.............. Cargo Compartment 114-1
....................... Courtesy 114-0
.......................... Dome 114-0
...................... Glove Box 114-0
................. Lights Dimming 117-0
........................ Reading 114-0
................ Light Switch Details 12-0
.................... Mirrors (Power) 141-0
Automatic
DayINight ............ 143-0
................. Power Distribution 10-0
Radio
...................... With UK3 150-0
With
UK3 and Subwoofer
..................... Amplifier 15 0-2
Without Subwoofer Amplifier and
with
UK3 ..................... 150-5 With
Subwoofer Amplifier and
without UK3
..................
.................. Repair Procedures
Seats (Power)
Lumbar Support
.................
Starter ............................
........................... Symbols
........... Theft Deterlent (Passkey)
......... Troubleshooting Procedures
.................. Hatch Pull-Down
..................... Hatch Release
............... Vehicle Speed Sensor
Warnings (Audible)
Chime
.........................
................... Windows (Power)
WiperIWasher
With Pulse .....................
................... Without Pulse
Page

REPAIR PROCEDURES m I L
REPAlRlNG METRI-PACK SERIES 150
CONNECTORS
(Pull-to-Seat Type)
Metri-Pack connectors are used to connect
various sensors such as the cam, crankshaft
and coolant sensors to primary harnesses in
the engine compartment. The Metri-Pack
connector consists of three parts (see Figure
35): a Pull to Seat type terminal, a connector
body and
a rubber seal which is inserted in
the back of the connector body to provide
environmental protection.
Do
nc: replace the Metri-Pack parts with
parts of other types of connectors and termi-
nals or omit the environmental seals when
repairing Metri-Pack connectors.
Repair instructions are divided into
two
steps, connector disassembly and terminal
removal and connector assembly and termi-
nal insertion. (Refer to figures
33 to 36)
Step One: Connector Disassembly and
Terminal Removal
Insert tool BT-8446 or 535689 into the con-
nector (Figure
33). Pull back on the wire
slightly, pry up the locking tang and then
push the wire through the front of the con-
nector. If the terminal will be reused, reshape
the locking tang.
Step 2: Connector Assembly and Terminal
Insertion
Insert the wire through the seal and the
connector body (Figure
35). Crimp the termi-
nal to the stripped wire. Pull the wire and the
terminal back through the connector body
until it locks in place (Figure
36).
NECTOR TERMINAL
BT8446 LOCKING TANG
Figure 33
- Terminal Removal From Connector Body
TOOL
BT8446
Figure 35 - Connector Reassembly
Figure 36
- Terminal Reinsertion

MULTI-PORT FUEL INJECTION: V6 VIN S
ENGlNE DATA SENSORS, TRANSMISSION CONVERTER CLUTCH