Chrysler Concorde 1993 Service Manual page 468

EXHAUST SYSTEM AND INTAKE MANIFOLD
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 1
SERVICE PROCEDURES . . . . . . . . . . . . . . . . . . . 4
EXHAUST SYSTEMS
The exhaust systems consist of two front exhaust
pipes equipped with close coupled metallic catalytic
converts and the exhaust module. The exhaust mod-
ule is a one piece welded module consist of underfloor
ceramic catalytic converter, muffler and a resonator
for the 3.5L vehicle only (Fig. 1).
The exhaust system must be properly aligned to
prevent undue stress, leakage and body contact. If
the system contacts any other vehicle component, it
may amplify objectionable noises originating from
the engine or other components. These contacts could
also be detrimental to the performance of the affected
component.
When inspecting an exhaust system, inspect for
cracked or loose joints, stripped threads, corrosion
damage, and worn, cracked or broken hangers. Re-
place all components that are badly corroded or dam-
aged. Do not attempt to repair.
EXHAUST SYSTEM AND INTAKE MANIFOLD
CONTENTS
page
TORQUE SPECIFICATION . . . . . . . . . . . . . . . . . 13
GENERAL INFORMATION
CATALYTIC CONVERTERS
There is no regularly scheduled maintenance on any
Chrysler catalytic converter. Excessive heat may cause
bulging or other distortion, but excessive heat will not be
the fault of the converter. A fuel system or ignition system
malfunction that permits unburned fuel to enter the
converter will usually cause overheating. If a converter
is heat damaged, correct the cause of the damage at
the same time the converter is replaced. The entire
converter must be replaced. Ceramic pieces may cause
restriction to exhaust flow or possible rattle in the system.
Inspect all other components of the exhaust system for
heat damage. Unleaded gasoline must be used to avoid
damage to the catalyst core.
Fig. 1 Exhaust System
11 - 1
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