Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 391

EMISSION CONTROL

TSB Revision

ENGINE AND EMISSION CONTROL

17-83

EM ISSIO N C O N TR O L

GENERAL DESCRIPTION

M1173000100046

The emission control system consists of the

following subsystems:

•

Positive crankcase ventilation system

•

Evaporative emission control system

•

Exhaust emission control system

DIAGNOSIS

M1173000700026

SPECIAL TOOLS

M1173000600063

SYMPTOM

PROBABLE CAUSE

REMEDY

Engine will not start or hard
to start

Vacuum hose disconnected or damaged

Repair or replace

The EGR valve is not closed.

Repair or replace

Malfunction of the evaporative emission
purge solenoid

Repair or replace

Rough idle or engine stalls

The EGR valve is not closed.

Repair or replace

Vacuum hose disconnected or damaged. Repair or replace

Malfunction of the positive crankcase
ventilation valve

Replace

Malfunction of the purge control system

Check the system; If there is a
problem, check its component
parts.

Engine hesitates or poor
acceleration

Malfunction of the exhaust gas
recirculation system

Check the system; If there is a
problem, check its component
parts.

Excessive oil consumption

Positive crankcase ventilation line
clogged

Check positive crankcase
ventilation system

Poor fuel mileage

Malfunction of the exhaust gas
recirculation system

Check the system; If there is a
problem, check its component
parts.

TOOL

TOOL NUMBER AND
NAME

SUPERSESSION

APPLICATION

MD998770
Oxygen sensor wrench

MD998770-01 or General
service tool

Removal/installation of
heated oxygen sensor

MB995061
Purge flow indicator

MLR6890A

Inspection of purge
control system

MD998770

EMISSION CONTROL

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ENGINE AND EMISSION CONTROL

17-84

VACUUM HOSES

VACUUM HOSE ROUTING

M1173000900042

<2.4L ENGINE>

AKX01293

THROTTLE
BODY

E G R VA LV E

EGR SOLENOID

FUEL TANK

FRONT

EVAPORATIVE
EMISSION PURGE
SOLENOID

B:BLACK
G:GREEN
L:LIGHT BLUE
W:WHITE
Y:YELLOW
*1:RED PAINT MARK
*2: RESTRICTOR

FUEL PRESSURE
REGULATOR

EVAPORATIVE
EMISSION
CANISTER

EVAPORATIVE EMISSION
VENTILATION SOLENOID

VACUUM CONTROL VALVE

CHAMBER

Y

B

W

G

B

B

B

B

B

Y

G

B

AB

*1

*2

EMISSION CONTROL

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ENGINE AND EMISSION CONTROL

17-85

<3.0L ENGINE>

AKX01294

B: BLACK
G: GREEN
L: LIGHT BLUE
W: WHITE
Y: YELLOW
*1:RED PAINT MARK
*2:RESTRICTOR

EVAPORATIVE
EMISSION
CANISTER

EVAPORATIVE EMISSION
VENTILATION SOLENOID

EGR VALVE

THROTTLE BODY

VACUUM
CONTROL
VALVE

CHAMBER

EGR SOLENOID

FUEL PRESSURE
REGULATOR

EVAPORATIVE EMISSION
PURGE SOLENOID

FRONT

AB

B

B

B

B

B

B

B

B

B

B

G

W G

G

Y

Y

*1

*1

*2

L

EMISSION CONTROL

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ENGINE AND EMISSION CONTROL

17-86

VACUUM CIRCUIT DIAGRAM

M1173007100025

<2.4L ENGINE>

AKX01295

INTAKE MANIFOLD

THROTTLE BODY

FROM AIR
CLEANER

TO COMB-
USTION
CHAMBER

EGR SOLENOID
(ON: CLOSE)

FUEL
PRESSURE
REGULATOR

EVAPORATIVE
EMISSION
PURGE
SOLENOID
(ON: OPEN)

CHAMBER

VACUUM
CONTROL
VALVE

EGR VALVE

FUEL
TANK

EVAPORATIVE
EMISSION
CANISTER

B: BLACK
G: GREEN
W: WHITE
Y: YELLOW
*1:RED PAINT MARK
*2:RESTRICTOR

EVAPORATIVE EMISSION
VENTILATION SOLENOID
(ON: CLOSE)

AB

B

B

B

B

B

B

B

G

G

W

Y

Y

*1

*2