MerCruiser 305 CID (5.0L) Service Manual page 553

FUEL INJECTION DISASSEMBLY AND REASSSEMBLY
Throttle Position (TP) Sensor
Refer to "Service Precautions," at front of this section BEFORE proceeding.
REMOVAL
1. Disconnect electrical connector at throttle position (TP) sensor.
2. Remove TP sensor from throttle body.
CLEANING AND INSPECTION
1. Clean the surfaces of the TP sensor with a dry cloth.
2. Inspect the TP sensor for signs of wear or damage.
INSTALLATION
IMPORTANT: If the TP sensor is to be replaced with a new unit, be sure to secure it
in place with the new screws which are included in the service package.
1. Install TP sensor to throttle body using screws with washers and Loctite 242 applied to
threads. Torque screws to 20 lb-in. (2 Nm).
2. Connect electrical connector to TP sensor.
3. Install throttle body, throttle linkage and flame arrestor as outlined in "Throttle Body."
4. Start engine and check for TP sensor output voltage. It should be approximately .7 V
at idle and 4.5 V at WOT.
Index
Page 5E-64
a - Throttle Body
b - Throttle Position (TP) Sensor
c - Screws
a - Throttle Body
b - Screws With Lockwashers
c - Seal
NOTICE
c
b
a
b
c
SERVICE MANUAL NUMBER 24
a
73758
b
73758
90-861327--1 OCTOBER 1999