Dodge 2000 DURANGO Service Manual page 706

11 - 4 EXHAUST SYSTEM
DIAGNOSIS AND TESTING
EXHAUST SYSTEM
CONDITION
EXCESSIVE EXHAUST NOISE OR
LEAKING EXHAUST GASES
When servicing and replacing exhaust system components, disconnect the oxygen sensor connector(s). Allowing
the exhaust to hang by the oxygen sensor wires will damage the harness and/or sensor.
REMOVAL AND INSTALLATION
EXHAUST PIPE
CAUTION: When servicing or replacing exhaust
system components, disconnect the oxygen sensor
connector(s). Allowing the exhaust to hang by the
oxygen sensor wires will damage the harness
and/or sensor.
REMOVAL
(1) Raise and support the vehicle.
(2) Saturate the bolts and nuts with Mopar Rust
Penetrant. Allow 5 minutes for penetration.
(3) Disconnect the oxygen sensor(s).
(4) Remove the exhaust manifold-to-exhaust pipe
nuts (Fig. 7) (Fig. 8) (Fig. 9).
(5) Remove exhaust pipe/converter to muffler
exhaust clamp.
(6) Disconnect the exhaust pipe/catalytic converter
from muffler.
(7) Remove the exhaust pipe.
EXHAUST SYSTEM DIAGNOSIS CHART
POSSIBLE CAUSE
1. Leaks at pipe joints.
2. Rusted or blown out muffler.
3. Broken or rusted out exhaust
pipe.
4. Exhaust pipe leaking at manifold
flange.
5. Exhaust manifold cracked or
broken.
6. Leak between exhaust manifold
and cylinder head.
7. Catalytic converter rusted or
blown out.
8. Restriction in exhaust system.
1. Tighten clamps/bolts to specified
torque at leaking joints.
2. Replace muffler. Inspect exhaust
system.
3. Replace exhaust pipe.
4. Tighten/replace flange attaching
nuts/bolts.
5. Replace exhaust manifold.
6. Tighten exhaust manifold to
cylinder head bolts.
7. Replace catalytic converter assy.
8. Remove restriction, if possible.
Replace restricted part if necessary.
Fig. 7 Exhaust Pipe to Manifold Connection—(5.2L
and 5.9L)
1 – BOLT
2 – RETAINER
3 – EXHAUST MANIFOLD
4 – NUT
5 – EXHAUST PIPE
DN
CORRECTION