Exhaust System And Intake Manifold - DaimlerChrysler LH New Yorker 1994 Electronic Service Manual

EXHAUST SYSTEM AND INTAKE MANIFOLD

GENERAL INFORMATION
SERVICE PROCEDURES
EXHAUST SYSTEMS
The exhaust systems consists 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 consisting of a
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 en-
gine 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.
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GENERAL INFORMATION
Fig. 1 Exhaust System
EXHAUST SYSTEM AND INTAKE MANIFOLD
TORQUE SPECIFICATION
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 con-
verter is heat damaged, correct the cause of the
damage at the same time the converter is re-
placed. The converter must be replaced. Inspect all
other components of the exhaust system for heat dam-
age. Unleaded gasoline must be used to avoid damage to
the catalyst core.
CAUTION: Due to exterior physical similarities of
some catalytic converters with pipe assemblies, ex-
treme care should be taken with replacement parts.
There is internal converter differences required in
some parts of the country (particularly California
vehicles).
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