Intake Air Temperature (Iat) Sensor 5C-49 - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23
INSTALLATION
1. Apply Loctite 242 to the threads. Install the TP sensor to the throttle body using the
2. Place a new gasket on the adapter.
3. Install throttle body on the adapter. Torque screws to 89 lb-in. (10 Nm).
4. Connect the harness connector to the TP sensor.
5. Place the flame arrestor over the throttle body and tighten hose clamp securely.
6. Position the starboard engine cover and install the screws.
7. When negative (–) battery cable has been reconnected, start engine and check for TP
Intake Air Temperature (IAT) Sensor
1. Disconnect the harness connector from the IAT sensor.
2. Remove IAT sensor from the plenum.
Index
90-861326--1 MARCH 1999
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screws. Torque screws to 20 lb-in. (2 Nm).
a
a - Screw (2)
b - Throttle Position (TP) Sensor
c - Throttle Body
sensor output voltage. It should be approximately .7 Volts at idle and 4.5 Volts at W.O.T.
Refer to "Precautions" in this section, BEFORE proceeding.
a - Intake Air Temperature (IAT) Sensor
MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
c
b
NOTICE
a
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