catalytic converter MITSUBISHI LANCER EVOLUTION IV 1998 Workshop Manual

MPI – General Information13-2
MULTIPOINT INJECTION (MPI)
GENERAL INFORMATION
OMPI System Diagram

1 Injector

2 ISC servo

3 Fuel pressure control valve

4 Waste gate solenoid valve

5 Secondary air control solenoid valve
Control relay
Fuel pump relay
A/C relay
Ignition coil
Exhaust temperature warning lamp
Engine warning lamp
Diagnosis output
Alternator G terminal
Fan motor relay
Tachometer
Fuel pump relay No.2 1 Oxygen sensor
2 Air flow sensor
3 Intake air temperature sensor
4 Throttle position sensor
5 Idle switch
6 Camshaft position sensor
7 Crank angle sensor
8 Barometric pressure sensor
9 High temperature sensor
10 Engine coolant temperature sensor
11 Detonation sensor
Power supply voltage
Ignition switch-IG
Ignition switch-ST
Vehicle speed sensor
A/C switch
Power steering fluid pressure switch
Alternator FR signalEngine ECU
1 Oxygen sensor
2 Air flow sensor3
Intake air tem-
perature sensor
4,
5
6 Camshaft position
sensor
7 Crank angle sensor 8 Barometric
pressure sensor
9 High temperature
sensor 10 Coolant temperature sensor
11 Detonation sensor
1 Injector
2 ISC servo

3 Fuel pressure
control valve

4 Waste gate
solenoid valve
5 Secondary air
control solenoid
valveCanister
Check valveFrom
fuel
tank
Throttle position
sensor (with a
built-in
idle
switch)
Secondary
air valve
AirTo fuel
tankFuel
pressure
regulatorFrom
fuel
pump
Waste gate
actuator
Catalytic converter
Given above is the MPI system diagram for EVOLUTION-IV. The MPI system for EVOLUTION-V is different
from this in the following point;
Oxygen sensor with a heater is adopted.
The diagnosis connector power supply circuit is different.
The high temperature sensor is no longer used.

INTAKE AND EXHAUST – Exhaust Pipe and Muffler15-14
EXHAUST PIPE AND MUFFLER
REMOVAL AND INSTALLATION
Unit: Nm {kgf
m}
15
44 {4.5}
49 {5.0}
34 {3.5}
5 {0.5}13 {1.3}
14
16
7 5 13
172 1
3
46 18
8
9 12
10 11
34 {3.5}
19 {1.9}49 {5.0}
Hanger mounting bolt tightening
torque
13 {1.3}
3, 9, 18
93 3 9
Main muffler removal steps
1. Bolt
2. Main muffler
3. Hanger
Center exhaust pipe removal steps
1. Bolt
4. Spring
5. Heat protector
6. Self-locking nut
7. Hanger bracket
8. Center exhaust pipe
9. Hanger
10. Protector11. High-temperature sensor
12. Bolt
13. Catalytic converter
14. Front floor heat protector panel
Front exhaust pipe removal steps
4. Spring
5. Heat protector
12. Bolt
15. Self-locking nut
16. Front exhaust pipe
17. Front exhaust pipe bracket
18. Hanger

17-1
ENGINE AND
EMISSION
CONTROL
CONTENTS
ENGINE CONTROL SYSTEM 2. . . . . . . .
SERVICE SPECIFICATIONS 2. . . . . . . . . . . . . .
EMISSION CONTROL SYSTEM 2. . . . . .
ON-VEHICLE SERVICE 2. . . . . . . . . . . . . . . . . .
System Configuration Diagram 2. . . . . . . . . . . . . .
Vacuum Hose Piping Circuit Diagram 3. . . . . . .
CANISTER 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CATALYTIC CONVERTER 4. . . . . . . . . . . . . . . .

ENGINE EMISSION CONTROL – Emission Control System 17-4
CATALYTIC CONVERTER
REMOVAL AND INSTALLATION
Unit: Nm {kgf
m}
3
2
154
49 {5.0}
5 {0.5}19 {1.9}
49 {5.0}
49 {5.0}
34 {3.5}13 {1.3}
Removal steps
1. Spring
2. Heat protector
3. Front exhaust pipe4. High temperature sensor

5. Catalytic converter