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VII. FUEL TEMPERATURE/PRESSURE
SENSOR
REMOVAL PROCEDURE
1. Relieve the LPG fuel system pressure. Refer
to XVIII. LPG FUEL SYSTEM PRESSURE
RELIEF.
2. Disconnect the negative battery cable.
3. Locate the Fuel Temperature Sensor on the
fuel rail.
4. Remove the electrical connector from the
Sensor.
5. Unscrew the sensor from the Fuel Rail.
INSTALLATION PROCEDURE
1. Lubricate the O-ring on the Fuel Temperature
Sensor with a light coat of Vaseline or petro-
leum jelly. Do not contaminate the tip of the
sensor.
The HEGO is sensitive to silicone based
products and can become contaminated.
Avoid using silicone sealers/lubricants on
any fuel or exhaust related components.
2. Install the sensor into the Fuel Rail. Torque
to 6-7.5 ft. lbs. (8-10 Nm). DO NOT
EXCEED 7.5 ft. lbs. (10 Nm).
3. Reconnect the electrical connector to the Fuel
Temperature Sensor.
4. Reconnect the negative battery cable.
5. Open valve on the LPG tank.
6. Turn ignition key to ON and check for leaks at
the inlet and outlet fittings using a commercial
grade soapy solution or an electronic leak de-
tector. If leaks are detected make repairs.
7. Start the vehicle and let run until it reaches
normal operating temperature.
8. If a DTC code is found, refer to the Electrical
Section for further diagnosis.
VIII. ENGINE COOLANT TEMPERATURE
SENSOR (ECT)
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Drain the coolant.
3. Locate the ECT just below the thermostat
housing .
4. Remove electrical connector from the ECT.
The coolant may be hot. Use caution when
removing hose(s) to prevent contact.
INSTALLATION PROCEDURE
1. Apply a light coat of Loctite 567 or equivalent
pipe thread sealant on the threads of the ECT.
2. Install the ECT into the engine and torque
until tight.
3. Connect the ECT electrical connector.
4. Refill the cooling system.
5. Reconnect the negative battery cable.
6. Start the vehicle and let run until it reaches
normal operating temperature.
7. If a DTC code is found, refer to the Electrical
Section for further diagnosis.
8. Allow the engine to cool, check coolant level
and add coolant if necessary.
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