catalytic converter ACURA TL 1995 Service Repair Manual
[x] Cancel search | Manufacturer: ACURA, Model Year: 1995, Model line: TL, Model: ACURA TL 1995Pages: 1771, PDF Size: 62.49 MB
Page 49 of 1771
41. Disconnect the vehicle speed sensor (VSS) connec-
tor, then remove the VSS/power steering speed
sensor.
Do not disconnect the fluid hoses.
6 x 1.0 mm
12 N-m (1.2 kgf-m,
8.7 Ibf-ft)
VSS CONNECTOR
VSS/POWER STEERING
SPEED SENSOR
42. Remove the heat shields from exhaust pipe A.
HEAT
SHIELDS
6 x 1.0 mm
12 N-m (1.2 kgf-m,
8.7 Ibf-ft)
43. Remove exhaust pipe A.
EXHAUST
PIPE A
GASKET
Replace.
SELF-LOCKING NUT
8 x
1.25
mm
22 N-m (2.2 kgf-m, 16 Ibf-ft)
Replace.
GASKETS
Replace.
GASKET
Replace.
TWC
6 x 1.0 mm
9.8 N-m (1.0 kgf-m,
7.2 Ibf-ft)
SELF-LOCKING NUT
8 x
1.25
mm
22 N-m (2.2 kgf-m,
16 Ibf-ft)
Replace.
SELF-LOCKING NUTS
10 x
1.25
mm
54 N-m (5.5 kgf-m,
40 Ibf-ft)
Replace.
44. Remove the wire harness cover and grommet, then
remove the three way catalytic converter (TWC).
SELF-LOCKING NUT
10 x
1.25
mm
32 N-m (3.3 kgf-m,
24 Ibf-ft)
Replace.
GROMMET
WIRE HARNESS
COVERProCarManuals.com
Page 158 of 1771
System Description
Vacuum Connections (cont'd)
'96 model:
LEFT PRIMARY HEATED OXYGEN SENSOR (LEFT PRIMARY
HO2S) (BANK 2 SENSOR 1)
RIGHT PRIMARY HEATED OXYGEN SENSOR (RIGHT
PRIMARY HO2S) (BANK 1 SENSOR 1)
SECONDARY HEATED OXYGEN SENSOR (SECONDARY
HO2S) (SENSOR 2)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
INTAKE AIR TEMPERATURE (IAT) SENSOR
LEFT KNOCK SENSOR (LEFT KS) (BANK 2)
RIGHT KNOCK SENSOR (RIGHT KS) (BANK 1)
IDLE AIR CONTROL (IAC) VALVE
FAST IDLE THERMO VALVE
IDLE ADJUSTING SCREW
FUEL INJECTOR
FUEL PRESSURE REGULATOR
FUEL PRESSURE REGULATOR CONTROL SOLENOID VALVE
FUEL FILTER
FUEL PUMP (FP)
FUEL TANK
AIR CLEANER (ACL)
INTAKE AIR BYPASS (IAB) LOW CONTROL DIAPHRAGM
VALVE
INTAKE AIR BYPASS (IAB) LOW CONTROL SOLENOID
VALVE
INTAKE AIR BYPASS (IAB) HIGH CONTROL DIAPHRAGM
VALVE
INTAKE AIR BYPASS (IAB) HIGH CONTROL SOLENOID
VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CHECK VALVE
THREE WAY CATALYTIC CONVERTER (TWC)
EXHAUST GAS RECIRCULATION (EGR) VALVE AND LIFT
SENSOR
EXHAUST GAS RECIRCULATION (EGR) CONTROL
SOLENOID VALVE
EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL
VALVE
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
DIAPHRAGM VALVE
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE
FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE
EVAPORATIVE EMISSION (EVAP) PURGE FLOW SWITCH
WATER VALVE CONTROL SOLENOID VALVE
WATER VALVE CONTROL DIAPHRAGM
WATER VALVE CHECK VALVEProCarManuals.com
Page 159 of 1771
'97 - 98 models:
LEFT PRIMARY HEATED OXYGEN SENSOR (LEFT PRIMARY
HO2S) (BANK 2 SENSOR 1)
RIGHT PRIMARY HEATED OXYGEN SENSOR (RIGHT
PRIMARY HO2S) (BANK 1 SENSOR 1)
SECONDARY HEATED OXYGEN SENSOR (SECONDARY
HO2S) (SENSOR 2)
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR
INTAKE AIR TEMPERATURE (IAT) SENSOR
LEFT KNOCK SENSOR (LEFT KS) (BANK 2)
RIGHT KNOCK SENSOR (RIGHT KS) (BANK 1)
IDLE AIR CONTROL (IAC) VALVE
FAST IDLE THERMO VALVE
IDLE ADJUSTING SCREW
FUEL INJECTOR
FUEL PRESSURE REGULATOR
FUEL PRESSURE REGULATOR CONTROL SOLENOID VALVE
FUEL FILTER
FUEL PUMP (FP)
FUEL TANK
AIR CLEANER (ACL)
INTAKE AIR BYPASS (IAB) LOW CONTROL DIAPHRAGM
VALVE
INTAKE AIR BYPASS (IAB) LOW CONTROL SOLENOID
VALVE
INTAKE AIR BYPASS (IAB) HIGH CONTROL DIAPHRAGM
VALVE
INTAKE AIR BYPASS (IAB) HIGH CONTROL SOLENOID
VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CHECK VALVE
THREE WAY CATALYTIC CONVERTER (TWC)
EXHAUST GAS RECIRCULATION (EGR) VALVE AND LIFT
SENSOR
EXHAUST GAS RECIRCULATION (EGR) CONTROL
SOLENOID VALVE
EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL
VALVE
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
EVAPORATIVE EMISSION (EVAP) THREE WAY VALVE
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
VENT SHUT VALVE
EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE
EVAPORATIVE EMISSION (EVAP) BYPASS SOLENOID
VALVE
FUEL TANK PRESSURE SENSOR
FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE
WATER VALVE CONTROL SOLENOID VALVE
WATER VALVE CONTROL DIAPHRAGM
WATER VALVE CHECK VALVE
FUEL PULSATION DAMPERProCarManuals.com
Page 316 of 1771
Mainshaft/Countershaft Speed Sensors
Replacement (cont'd)
6. Place a jack under the transmission, and raise the
transmission just enough to take the weight off of the
mounts, then remove the stop holder, the mid mount
stops and the mid mounts.
TRANSMISSION
MID MOUNT NUT
10 x 1.25mm
48 N-m (4.9 kgf-m,
35 Ibfft
STOP HOLDER
(U.S. model only)
MID MOUNT
STOP
(U.S. model onlyf
10 x
1.25
mm
54 N-m
(5.5 kgf-m,
40 Ibf-ft)
7. Lower the transmission with a jack.
8x
1.25
mm
22 N-m
(2.2 kgf-m, 16 Ibf-ft)
MID
MOUNT
MID MOUNT
BRACKET BOLTS
10 x
1.25
mm
38 N-m (3.9 kgf-m,
28 Ibf-ft)
8. Remove the 6 mm bolt from the transmission hous-
ing, and remove the mainshaft and countershaft
speed sensors.
9. Replace the O-rings with new ones before reassem-
bling the mainshaft and countershaft speed sensors.
10. Install the washers on the mainshaft and countershaft
speed sensors, then install them on the transmission
housing.
6x
1.0mm
MAINSHAFT 12 N-m (1.2 kgf-m, 8.7 Ibf-ft)
SPEED SENSOR
WASHER
O-RING
Replace.
COUNTER-
SHAFT
SPEED
SENSOR
O-RING
Replace.
WASHER
11. Raise the transmission with a jack, then install the
mid mounts. Tighten the mid mount bracket bolts,
then tighten the mid mount nuts.
12. Install the transmission beam on the rear transmis-
sion mount bracket/mount, then tighten the three
bolts loosely.
13. Tighten the three transmission beam bolts, then
tighten the two transmission beam bolts to the
specified torque.
14. Install the shift cable guide bracket on the transmis-
sion beam.
6x
1.0mm
TRANSMISSION BEAM 9-8 N-m (1.0 kgf-m,
BOLTS, 2 7.2 Ibfft)
12x1.25 mm
54 N-m (5.5 kgf-m,
40 Ibf-ft)
SHIFT CABLE
GUIDE BRACKET
TRANSMISSION BEAM BOLTS, 3
10 x
1.25
mm
38 N-m (3.9 kgf-m, 28 Ibf-ft)
15. Install the heat shields.
16. Install the exhaust pipe A and the three way catalytic
converter, then install the exhaust pipe A cover.
17. Push the H02S (sensor 2) connector into the vehi-
cle, then secure with the harness grommet.
18. Install the H02S (sensor 2) harness cover.
19. Connect the HO2S (sensor 2) connector.ProCarManuals.com
Page 342 of 1771
10. Remove the HO2S (sensor 2) harness cover, then
remove the three way catalytic converter.
THREE WAY CATALYTIC
CONVERTER
GASKET
Replace.
EXHAUST
PIPE A
COVER
EXHAUST
PIPE A COVER
HO2S
(SENSOR 2)
HARNESS
COVER
11. Remove the exhaust pipe A cover, then remove the
exhaust pipe A.
12. Remove the heat shields.
Loosen these
bolts.
HEAT SHIELD
HEAT SHIELD
13. Remove the ATF cooler hoses at the ATF cooler
lines. Turn the ends of the cooler hoses up to pre-
vent ATF from flowing out, then plug the ATF cooler
lines and hoses.
NOTE: Check for any signs of leakage at the hoses
joints.
SHIFT CABLE
HOLDER
SHIFT CABLE
CONTROL LEVER
SHIFT CABLE
COVER
WASHER
ATF DIPSTICK
PIPE
O-RING
Replace.
ATF COOLER HOSES
SHIFT CABLE
HOLDER BASE
SHIFT CONTROL SOLENOID
VALVE/LINEAR SOLENOID
HARNESS CONNECTOR
ATF COOLER LINES
14. Remove the shift cable cover mounting bolts, then
remove the A/T gear position switch harness clamp
and the shift control solenoid valve/linear solenoid
harness connector from the shift cable cover.
15. Remove the shift cable cover from the transmission
housing.
16. Remove the shift cable holder with shift cable from
the shift cable holder base.
17. Remove the control lever from the control shaft.
18. Remove the ATF dipstick pipe from the torque con-
verter housing.
(cont'd)
COVER
HOLDER
EXHAUST
PIPE A
GASKET
Replace.ProCarManuals.com
Page 839 of 1771
System Description
Vacuum Connections (cont'd)
'95 - 96 models:
PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S)
SECONDARY HEATED OXYGEN SENSOR (SECONDARY
HO2S)
MASS AIR FLOW (MAP) SENSOR
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
INTAKE AIR TEMPERATURE (IAT) SENSOR
FRONT KNOCK SENSOR (FKS)
REAR KNOCK SENSOR (RKS)
IDLE AIR CONTROL (IAC) VALVE
FAST IDLE THERMO VALVE
IDLE ADJUSTING SCREW
THROTTLE BODY (TB)
FUEL INJECTOR
FUEL FILTER
FUEL PRESSURE REGULATOR
FUEL PULSATION DAMPER
FUEL PUMP (FP)
FUEL TANK
FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE
AIR CLEANER
RESONATOR
CRANKSHAFT SPEED FLUCTUATION (CKF) SENSOR
INTAKE AIR BYPASS (IAB) CHECK VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CONTROL SOLENOID VALVE
INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM
EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL
VALVE
EXHAUST GAS RECIRCULATION (EGR) CONTROL
SOLENOID VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE LIFT
SENSOR
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) PURGE FLOW SWITCH
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
DIAPHRAGM VALVE
EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE
WARM UP THREE WAY CATALYTIC CONVERTER (WU TWC)
THREE WAY CATALYTIC CONVERTER (TWC)
WATER VALVE CONTROL SOLENOID VALVE
WATER VALVE CONTROL DIAPHRAGM
WATER VALVE CHECK VALVEProCarManuals.com
Page 840 of 1771
'97 - 98 models:
Vacuum hose No.
PRIMARY HEATED OXYGEN SENSOR (PRIMARY HO2S)
SECONDARY HEATED OXYGEN SENSOR (SECONDARY
HO2S)
MASS AIR FLOW (MAP) SENSOR
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
INTAKE AIR TEMPERATURE (IAT) SENSOR
FRONT KNOCK SENSOR (FKS)
REAR KNOCK SENSOR (RKS)
IDLE AIR CONTROL (IAC) VALVE
FAST IDLE THERMO VALVE
IDLE ADJUSTING SCREW
THROTTLE BODY (TB)
FUEL INJECTOR
FUEL FILTER
FUEL PRESSURE REGULATOR
FUEL PULSATION DAMPER
FUEL PUMP (FP)
FUEL TANK
FUEL TANK EVAPORATIVE EMISSION (EVAP) VALVE
AIR CLEANER
RESONATOR
CRANKSHAFT SPEED FLUCTUATION (CKF) SENSOR
INTAKE AIR BYPASS (IAB) CHECK VALVE
INTAKE AIR BYPASS (IAB) VACUUM TANK
INTAKE AIR BYPASS (IAB) CONTROL SOLENOID VALVE
INTAKE AIR BYPASS (IAB) CONTROL DIAPHRAGM
EXHAUST GAS RECIRCULATION (EGR) VACUUM CONTROL
VALVE
EXHAUST GAS RECIRCULATION (EGR) CONTROL
SOLENOID VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE
EXHAUST GAS RECIRCULATION (EGR) VALVE LIFT
SENSOR
POSITIVE CRANKCASE VENTILATION (PCV) VALVE
EVAPORATIVE EMISSION (EVAP) PURGE CONTROL
SOLENOID VALVE
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
EVAPORATIVE EMISSION (EVAP) CONTROL CANISTER
VENT SHUT VALVE
EVAPORATIVE EMISSION (EVAP) THREE WAY VALVE
EVAPORATIVE EMISSION (EVAP) TWO WAY VALVE
EVAPORATIVE EMISSION (EVAP) BYPASS SOLENOID
VALVE
FUEL TANK PRESSURE SENSOR
WARM UP THREE WAY CATALYTIC CONVERTER (WU TWC)
THREE WAY CATALYTIC CONVERTER (TWC)
WATER VALVE CONTROL SOLENOID VALVE
WATER VALVE CONTROL DIAPHRAGM
WATER VALVE CHECK VALVEProCarManuals.com
Page 927 of 1771
Three Way Catalytic Converter (TWC)
Description
The Three Way Catalytic Converter (TWC) and Warm Up Three Way Catalytic Converter (WU TWC) are used to convert
hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) in the exhaust gas to carbon dioxide (CO2), dini-
trogen (N2) and water vapor.
PRIMARY
HEATED
OXYGEN SENSOR
(PRIMARY HO2S)
HOUSING
WARM UP
THREE WAY
CATALYST
THREE WAY
CATALYSTS
SECONDARY
HEATED
OXYGEN SENSOR
(SECONDARY
HO2S)
FRONT OF
VEHICLE
HOUSINGProCarManuals.com