EGR Temperature Sensor: Service and Repair

COMPONENTS FOR REMOVAL AND INSTALLATION





1. DISCONNECT NEGATIVE (-) TERMINAL CABLE FROM BATTERY.

CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery.

2. DRAIN ENGINE COOLANT.





3. REMOVE EGR VALVE.
- Disconnect the EGR valve connector.
- Disconnect the following hoses from the EGR valve:
- Water bypass hose from Idle Air Control (IAC) valve.
- Water bypass hose from rear water bypass joint.





- Remove the 2 nuts, EGR valve and gasket.





4. REMOVE EGR VALVE ADAPTOR.
- Disconnect the EGR gas temperature sensor.
- Disconnect the PCV hose from the EGR valve adaptor.





- Remove the 2 bolts, 2 nuts, EGR valve adaptor and gasket.





5. REMOVE EGR GAS TEMPERATURE SENSOR FROM EGR VALVE ADAPTOR.
- Mount the EGR valve adaptor in a vise.
- Remove the EGR gas temperature sensor.
- Remove the connector bracket from the sensor connector.





6. INSPECT EGR GAS TEMPERATURE SENSOR.
- Using an ohmmeter, measure the resistance between the terminals.

Resistance:
64 - 97 k Ohms at 50°C (112°F)
11 - 16 k Ohms at 100°C(212°F)
2 - 4 k Ohms at 150°C (302°F)

- If the resistance is not as specified, replace the sensor.





7. REINSTALL EGR GAS TEMPERATURE SENSOR TO EGR VALVE ADAPTOR.
- Mount the EGR valve adaptor in a vise.
- Install the EGR gas temperature sensor to the adaptor.

Torque: 20 Nm (14 ft lb)

- Install the connector bracket to the sensor connector.





- REINSTALL EGR VALVE ADAPTOR.
- Install a new gasket, the EGR valve adaptor and connector bracket with the 2 bolts and 2 nuts.

Torque: 18 Nm (13 ft lb)

NOTICE: Do not touch the air intake chamber and adaptor surfaces of the gasket with your hand.





- Connect the PCV hose to the EGR valve adaptor.
- Connect the EGR gas temperature sensor.





9. REINSTALL EGR VALVE.
California:
- Place a new gasket on the EGR valve adaptor.

NOTICE:
- Do not touch the adaptor and EGR valve surfaces of the gasket with your hand.
- Align the port holes of the gasket and adaptor.

- Be careful of the installation direction.





- Install the EGR valve with the 2 nuts.

Torque: 18 Nm (13 ft lb)





- Connect the following hoses to the EGR valve:
- Water bypass hose (from IAC valve).
- Water bypass hose (from rear water bypass joint).
- Connect the EGR valve connector.
10. RECONNECT NEGATIVE (-) TERMINAL CABLE TO BATTERY.
11. REFILL WITH ENGINE COOLANT.