Opel Frontera UE. Manual - part 255

6E1–318

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

acceptable for proper EGR system operation, the ECM
will set DTC P0404.

GENERAL DESCRIPTION —
POSITIVE CRANKCASE
VENTILATION (PCV) SYSTEM

Crankcase Ventilation System Purpose

The crankcase ventilation system is used to consume
crankcase vapors in the combustion process instead of
venting them to the atmosphere. Fresh air from the
throttle body is supplied to the crankcase and mixed with
blow–by gases. This mixture is then passed through the
positive crankcase ventilation (PCV) port into the intake
manifold.
While the engine is running, exhaust gases and small
amounts of the fuel/air mixture escape past the piston
rings and enter the crankcase. These gases are mixed
with clean air entering through a tube from the air intake
duct.

028RX003

During normal, part–throttle operation, the system is
designed to allow crankcase gases to flow through the
PCV valve into the throttle body to be consumed by
normal combustion.
A plugged valve or PCV hose may cause the following
conditions:

D

Rough idle.

D

Stalling or slow idle speed.

D

Oil leaks.

D

Sludge in the engine.

A leaking PCV hose would cause:

D

Rough idle.

D

Stalling.

D

High idle speed.

6E1–319

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

SPECIAL TOOLS

ILLUSTRATION

TOOL NO.

TOOL NAME

5-8840-0285-0

(J 39200)

High Impedance

Multimeter (Digital

Voltmeter – DVM)

(1) PCMCIA Card

(2) RS232 Loop Back

Connector

(3) SAE 16/19 Adapter

(4) DLC Cable

(5) TECH–2

5-8840-0607-0

(J 34142-B)

Unpowered Test Light

5-8840-0385-0

(J 35616-A/BT-8637)

Connector Test Adapter

Kit

5-8840-0383-0

(J 26792/BT-7220-1)

Spark Tester

5-8840-0279-0

(J 23738-A)

Vacuum Pump with

Gauge

ILLUSTRATION

TOOL NO.

TOOL NAME

5-8840-2640-0

(J 39194-B)

Heated Oxygen Sensor

Wrench

5-8840-0632-0

(J 35689-A)

Terminal Remover

5-8840-0388-0

(J 28742-A)

Weather Pack II

Terminal Remover

5-8840-2606-0

(J 39021-45)

Injector Test Light

ENGINE EXHAUST (X22SE 2.2L)

6F–1

ENGINE

ENGINE EXHAUST (X22SE 2.2L)

CONTENTS

Service Precaution......................................... 6F - 1
General Description ....................................... 6F - 2

Front Exhaust Pipe........................................ 6F - 3

Front Exhaust Pipe and Associated Parts .. 6F - 3
Removal ..................................................... 6F - 3
Installation .................................................. 6F - 3

Exhaust Silencer ........................................... 6F - 4

Exhaust Silencer and Associated Parts...... 6F - 4

Removal...................................................... 6F - 4
Installation................................................... 6F - 4

Rear Exhaust pipe......................................... 6F - 5

Rear Exhaust pipe and Associated Parts ... 6F - 5
Removal...................................................... 6F - 5
Installation................................................... 6F - 5

Main Data and Specifications ........................ 6F - 6

Service Precaution

WARNING:  THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS).   REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER  YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING.  WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE
SRS COMPONENTS OR THE SRS WIRING,  REFER
TO THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT  IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY, OR OTHERWISE UNNEEDED SRS SYSTEM
REPAIRS.

CAUTION:  Always use the correct fastener in the
proper location.  When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will  call out those fasteners that require a
replacement after removal. ISUZU will also call out
the  fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do  not
use supplemental coatings (Paints, greases, or
other corrosion inhibitors) on threaded  fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener  torque and the joint
clamping force, and may damage the fastener. When
you install fasteners,  use the correct tightening
sequence and specifications. Following these
instructions can help you  avoid damage to parts
and systems.

SECTION

6F–2

ENGINE EXHAUST (X22SE 2.2L)

General Description

150RX013

When inspecting or replacing exhaust system 
components, make sure there is adequate clearance 
from all points  on the underbody to prevent overheating 
the floor pan and possible damage to the passenger 
compartment insulation and trim materials.
Check complete exhaust system and nearby body areas 
and rear compartment lid for broken, damaged, missing  
or mispositioned parts, open seams, holes, loose 
connections or other deterioration which could permit 
exhaust fumes to  seep into the rear compartment or 
passenger compartment. Dust or water in the rear 
compartment may be an indication of  a problem in one 
of these areas. Any faulty areas should be corrected 
immediately.

Hangers

Various types of hangers are used to support exhaust 
system(s). These include conventional rubber straps, 
rubber rings,  and rubber blocks.
The installation of exhaust system supports is very 
important, as improperly installed supports can cause 
annoying vibrations  which can be difficult to diagnose.

Three Way Catalytic Converter

The three way catalytic converter is an emission control 
device added to the exhaust system to reduce pollutants 
from  the exhaust gas stream.

CAUTION:  The catalytic converter requires the use 

of unleaded fuel only.
Periodic maintenance of the exhaust system is not 
required. If the vehicle is raised for other service, it is 
advisable to  check the condition of the complete 
exhaust system.
A dual bed monolith catalytic converter is used in 
combination with three way catalytic converter.
Catalytic Types:
Three way (Reduction/Oxidation) catalyst
The catalyst coating on the three way (reduction) 
converter contains platinum and rhodium which lowers 
the levels of nitrous oxide (NOx) as well as 
hydrocarbons (HC) and carbon monoxide (Co).

Gasket

The gasket must be replaced whenever a new exhaust 
pipe, muffler or catalytic converter is installed.