Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Exhaust Pipe: Service and Repair
Exhaust Pipe Replacement
WARNING: IF TORCHES ARE USED WHEN WORKING ON THE EXHAUST SYSTEM, DO NOT ALLOW THE FLAME NEAR THE
FUEL LINES.
CAUTION: When servicing exhaust system components, disconnect the oxygen sensor connector(s). Allowing the exhaust system to hang by the
oxygen sensor harness will damage the wiring and/or sensor.
REMOVAL
1. Raise and support the vehicle.
Exhaust Pipe With Catalytic Converter-2.5L Engine
Exhaust Pipe With Catalytic Converter-4.0L Engine
2. Saturate the studs and nuts with heat valve lubricant. Allow 5 minutes for penetration.
3. Remove the oxygen sensors from the exhaust pipe and the catalytic converter.
4. Disconnect the exhaust pipe from the engine exhaust manifold. Discard the seal (4.0L engine, only).
5. Support the transmission and remove the rear crossmember.
6. Remove the clamp from the catalytic converter and muffler connection.
7. Heat the catalytic converter and muffler connection with an oxyacetylene torch until the metal becomes cherry red.
8. While the metal is still cherry red, twist the muffler assembly back and forth to separate it from the catalytic converter.
INSTALLATION
