Ford Mustang (1999-2004) Service Manual: Catalyst Monitor Sensor

Special Tool(s)

Socket, Exhaust Gas Oxygen Sensor 303-476 (T94P-9472-A)

Material

Item Specification
Penetrating and Lock Lubricant or equivalent E8AZ-19A501- B

Removal and Installation

1. Disconnect the battery ground cable. For additional information, refer to Section.

2. Raise and support the vehicle. For additional information, refer to Section.

3. NOTE: Two catalyst monitor sensors are used for the engine control system. They are located in the dual converter Y pipe downstream from the catalyst. The left side catalyst monitor sensor is shown, the right side is similar.

Disconnect the connector.

Catalyst Monitor Sensor

4. NOTE: If necessary, lubricate the sensors with penetrating and lock lubricant to assist in removal.

Using the special tool, remove the catalyst monitor sensors from the dual converter Y pipe.

Catalyst Monitor Sensor

5. To install, reverse the removal procedure.

Catalyst Monitor Sensor

    Heated Oxygen Sensor (HO2S)
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    Other materials:

    General information
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    Component Tests
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