Engine Temperature Sensor - Buell 2007 FIREBOLT Service Manual

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ENGINE TEMPERATURE SENSOR

GENERAL
The Engine Temperature Sensor (ET Sensor), located in the
rear cylinder head, monitors the engine temperature close to
the combustion chamber. In addition to aiding the ECM in
monitoring the operation of the engine, it is also used to warn
the operator of potentially damaging temperatures by causing
the CHECK ENGINE lamp to blink during operation.
REMOVAL
1. Remove seat. See 2.38
1 1
WARNING WARNING
To prevent accidental vehicle start-up, which could
cause death or serious injury, disconnect negative (-)
battery cable before proceeding. (00048a)
2. Disconnect negative battery cable.
3. Remove intake cover assembly. See
COVER ASSEMBLY.
4. Remove air cleaner cover. See
ASSEMBLY.
5. See Figure 4-78. Remove right upper tie bar fastener (2).
Rotate tie bar to provide access to sensor.
NOTE
Do not pull on engine temperature sensor wiring. Excess
strain to sensor wiring will cause sensor damage.
6. Unplug 1-place ET Sensor connector (1) [90] above rear
cylinder head.
7. Slide rubber boot up ET sensor wire.
8. Remove sensor from rear cylinder head using Snap-on
socket M3503B.
b0801x4x
Figure 4-77. Engine Temperature Sensor Location (rear
cylinder)
4-102 2007 Buell Firebolt: Fuel System
SEAT.
2.34 INTAKE
4.44 AIR CLEANER
10557
Figure 4-78. Engine Temperature Sensor Connector
Approximate Location [90]
INSTALLATION
NOTE
Do not pull on engine temperature sensor wiring. Excess
strain to sensor wiring will cause sensor damage.
1. See Figure 4-77. Screw sensor into rear cylinder head.
NOTE
In next step, make sure wire is in cutout portion (slot) of
socket to prevent damage.
2. Secure sensor with Snap-on socket M3503B. Tighten ET
sensor to 120-168 in-lbs (13.6-19 Nm).
NOTE
Orient the rubber boot so the flat on the boot is towards the
left side of the motorcycle.
3. Push rubber boot down sensor wire towards cylinder
head until it seats in hole on top of ET sensor.
4. See Figure 4-78. Connect ET sensor 1-place connector
[90] to wiring harness.
5. Install right upper tie bar fastener (2). Tighten fastener to
25-27 ft-lbs (33.9-36.6 Nm).
6. Install air cleaner cover. See
ASSEMBLY.
7. Install intake cover assembly. See
ASSEMBLY.
8. Connect negative battery cable.
1 1
WARNING WARNING
After installing seat, pull upward on front of seat to be
sure it is in locked position. While riding, a loose seat can
shift causing loss of control, which could result in death
or serious injury. (00070a)
9. Install seat. See 2.38 SEAT.
4.34
4.44 AIR CLEANER
2.34 INTAKE COVER