Exhaust System And Intake Manifold - Jeep 1996 Grand Cherokee Service Manual

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EXHAUST SYSTEM AND INTAKE MANIFOLD

GENERAL INFORMATION
BAND CLAMP (TORCA) . . . . . . . . . . . . . . . . . . . 3
CATALYTIC CONVERTER . . . . . . . . . . . . . . . . . . . 2
EXHAUST SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 1
HEAT SHIELDS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DIAGNOSIS AND TESTING
EXHAUST SYSTEM DIAGNOSIS . . . . . . . . . . . . . 3
REMOVAL AND INSTALLATION
CATALYTIC CONVERTER-4.0/5.2L ENGINES . . 5
EXHAUST MANIFOLD-5.2L ENGINE . . . . . . . . 9
EXHAUST PIPE-4.0/5.2L ENGINES . . . . . . . . . 4
GENERAL INFORMATION
EXHAUST SYSTEM
The basic exhaust system consists of exhaust man-
ifold(s), exhaust pipe with oxygen sensor, catalytic
converter, heat shield(s), muffler and tailpipe (Fig. 1)
or (Fig. 2).
The exhaust system uses a single muffler with a
single monolithic- type catalytic converter.
The 4.0L engines use a seal between the exhaust
manifold and exhaust pipe to assure a tight seal and
strain free connections.
The 5.2L exhaust manifolds are equipped with ball
flange outlets to assure a tight seal and strain free
connections.
The exhaust system must be properly aligned to
prevent stress, leakage and body contact. If the sys-
tem contacts any body panel, it may amplify objec-
tionable noises originating from the engine or body.
When inspecting an exhaust system, critically
inspect for cracked or loose joints, stripped screw or
bolt threads, corrosion damage and worn, cracked or
broken hangers. Replace all components that are
badly corroded or damaged. DO NOT attempt to
repair.
When replacement is required, use original equip-
ment parts (or their equivalent). This will assure
proper alignment and provide acceptable exhaust
noise levels.
CAUTION: Avoid application of rust prevention
compounds or undercoating materials to exhaust
system floor pan heat shields. Light overspray near
the edges is permitted. Application of coating will
EXHAUST SYSTEM AND INTAKE MANIFOLD
CONTENTS
page
INTAKE AND EXHAUST MANIFOLD-4.0L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INTAKE MANIFOLD-5.2L ENGINE . . . . . . . . . . 7
MUFFLER AND TAILPIPE-4.0/5.2L ENGINES . 5
CLEANING AND INSPECTION
EXHAUST MANIFOLD-5.2L ENGINE . . . . . . . 10
INTAKE AND EXHAUST MANIFOLD-4.0L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
INTAKE MANIFOLD- 5.2L ENGINE . . . . . . . . . 10
SPECIFICATIONS
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fig. 1 Exhaust System-4.0L Engine
result in excessive floor pan temperatures and
objectionable fumes.
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