Mitsubishi Colt Ralliart. Manual — part 111

RADIATOR

ENGINE COOLING

14-26

REMOVAL SERVICE POINT
<<A>> RADIATOR UPPER HOSE/RADIA-
TOR LOWER HOSE/HOSE CLIPS
REMOVAL

AC209237 AB

Hose clip

Claw (Tip)

Break off the tip of hose clip claw and spread out the
hose clip, then disconnect the radiator lower hose.
NOTE: If there is a hose clip claw, the hose clip can-
not spread to capacity because the claw contacts the
hose clip.

INSTALLATION SERVICE POINT
>>A<< HOSE CLIPS/RADIATOR LOWER
HOSE/RADIATOR UPPWER HOSE
INSTALLATION

CAUTION

Never reuse the hose clip whose claw is broken
off to prevent the rusting.
1. Insert a new hose clip into the radiator hose.
2. Insert the radiator hose until the protrusion at both

radiator and engine side.

3. Remove the hose clip claw and shorten the hose

clip, then install the radiator hose.

9. Radiator piping clamp

<<

A

>> >>

A

<< 10. Radiator upper hose

<<

A

>> >>

A

<< 11. Hose clips

12. Radiator piping clamp

<<

A

>> >>

A

<< 13. Radiator lower hose

<<

A

>> >>

A

<< 14. Hose clips

15. Headlamp support upper panel
16. Radiator support upper insulators
17. A/C condenser mounting bolts
•

Radiator assembly

18. Radiator support lower insulators
19. Cooling fan, cooling fan motor and

cooling fan shroud assembly

20. Radiator

Cooling fan, cooling fan motor
and cooling fan shroud removal

4. Radiator condenser tank hose
5. Cooling fan motor connector
6. Radiator condenser tank assembly
9. Radiator piping clip
12. Radiator piping clip
15. Headlamp support upper panel
19. Cooling fan, cooling fan motor and

cooling fan shroud assembly

21. Cooling fan
22. Cooling fan motor
23. Cooling fan shroud

Radiator removal steps

Main

Index

Group

TOC

GROUP 15

INTAKE AND

EXHAUST

CONTENTS

GENERAL INFORMATION . . . . . . . .

15-2

SERVICE SPECIFICATIONS. . . . . . .

15-2

SPECIAL TOOL . . . . . . . . . . . . . . . . .

15-2

ON-VEHICLE SERVICE. . . . . . . . . . .

15-3

TURBOCHARGER SUPERCHARGING

PRESSURE CHECK <4G1>. . . . . . . . . . . .

15-3

SUPERCHARGING PRESSURE

CONTROL SYSTEM CHECK <4G1> . . . . .

15-3

WASTE GATE ACTUATOR CHECK

<4G1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15-4

WASTE GATE SOLENOID VALVE CHECK

<4G1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15-4

AIR BY-PASS VALVE CHECK <4G1> . . . .

15-4

INTAKE MANIFOLD VACUUM CHECK . . .

15-4

AIR CLEANER . . . . . . . . . . . . . . . . . .

15-5

REMOVAL AND INSTALLATION <4A9> . .

15-5

REMOVAL AND INSTALLATION <4G1> . .

15-6

INTERCOOLER . . . . . . . . . . . . . . . . .

15-8

REMOVAL AND INSTALLATION <4G1> . .

15-8

INLET MANIFOLD . . . . . . . . . . . . . . .

15-11

REMOVAL AND INSTALLTION <4A9>. . . .

15-11

REMOVAL AND INSTALLTION <4G1> . . .

15-12

INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .

15-13

EXHAUST MANIFOLD . . . . . . . . . . . .

15-14

REMOVAL AND INSTALLATION <4A9> . .

15-14

INSPECTION <4A9> . . . . . . . . . . . . . . . . . .

15-14

EXHAUST MANIFOLD AND
TURBOCHARGER . . . . . . . . . . . . . . .

15-15

REMOVAL AND INSTALLATION <4G1> . .

15-15

INSPECTION <4G1>. . . . . . . . . . . . . . . . . .

15-18

EXHAUST PIPE AND MAIN

MUFFLER . . . . . . . . . . . . . . . . . . . . . .

15-19

REMOVAL AND INSTALLATION <4A9> . .

15-19

REMOVAL AND INSTALLATION <4G1> . .

15-21

Main

Index

GENERAL INFORMATION

INTAKE AND EXHAUST

15-2

GENERAL INFORMATION

M1151000100703

The exhaust pipe is divided into three parts.

SERVICE SPECIFICATIONS

M1151000300848

Item

Standard value

Limit

Turbocharger supercharging pressure (waste gate
solenoid valve not operating) kPa

39

− 65

−

Initial activation pressure of waste gate actuator (at the
stroke of approxim ately 1mm) kPa

60

−

Waste gate solenoid valve coil resistance (at 20

°C) Ω

29

− 35

−

Initial activation pressure of air by pass valve kPa

Approximately 53

−

Manifold distortion of the installation surface mm

0.15 or less

0.20

SPECIAL TOOL

M1151000600623

Tool

Number

Name

Use

B991953

MB991953

Oxygen sensor
wrench

Removal and installation of oxygen
sensor

Main

Index

Group

TOC

ON-VEHICLE SERVICE

INTAKE AND EXHAUST

15-3

ON-VEHICLE SERVICE

TURBOCHARGER SUPERCHARGING
PRESSURE CHECK <4G1>

M1151001000356

CAUTION

Two persons should be in the vehicle when the
test is conducted; the person in the passenger
seat should read the indications shown by the
pressure meter.

AK402049AC

Plug

Turbocharger waste
gate solenoid valve

1. Disconnect the hose (white paint mark) from the

turbocharger waste gate solenoid valve, and
connect the pressure gauge to the hose. Plug the
nipple of the solenoid valve from which the hose
(white paint mark) has been disconnected.

2. Drive at full-throttle acceleration in second gear

and then measure the supercharging pressure
when the engine speed in about 3,000 r/min.

Standard value: 39

− 65 kPa

3. If the supercharging pressure deviates from the

standard value, check the following items for
possible cause.

• Malfunction of the waste gate actuator

• Leakage of supercharging pressure

• Malfunction of the turbocharger

4. When the indicated supercharging is more than

standard value, supercharging control may be
faulty, therefore check the followings.

• Malfunction of the waste gate actuator

• Malfunction of waste gate valve

• Disconnection or cracks of the waste gate actua-

tor rubber hose

SUPERCHARGING PRESSURE
CONTROL SYSTEM CHECK <4G1>

M1151001100267

AK402050

Three-way joint

AC

Turbocharger waste
gate solenoid valve

1. Disconnect the hose (white paint mark) from the

turbocharger waste gate solenoid valve and
connect a three-way joint between the hose and
the solenoid valve.

2. Connect a hand vacuum pump to the three-way

joint.

AK402051

Nipple

Boost hose (Red stripe)

AC

3. Disconnect the hose from the turbocharger waste

gate actuator control boost nipple and plug the
nipple.

4. Applying a negative pressure with the hand

vacuum pump, check tightness both when the
hose end is closed and when it is open.

Engine state

Hose end

Normal state

Stop
(Ignition switch: ON)

Opened

Negative
pressure leaks.

Closed

Negative
pressure is
maintained.

Idling (after
warm-up)

Negative
pressure leaks.

NOTE: If this check indicates an abnormal condi-
tion; the turbocharger waste gate actuator, turbo-
charger waste gate solenoid or hose is broken.

Main

Index

Group

TOC