General; Removal; Engine Temperature Sensor (Et) - Buell XB 2008 Series Service Manual

ENGINE TEMPERATURE SENSOR (ET)

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

PART NUMBER
SNAP-ON M3503B ENGINE TEMPERATURE SENSOR
SOCKET
1. Remove seat.
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.
4. Remove air cleaner cover. See
ASSEMBLY.
5. Remove right upper tie bar fastener. Rotate tie bar to
provide access to sensor.
NOTES
Lightning/Ulysses models: Remove fastener securing rear
wire guide to underside of frame to provide access to
temperature sensor.
Do not pull on engine temperature sensor wiring. Excess
strain to sensor wiring will cause sensor damage.
6. See Figure 4-17. Disconnect engine temperature sensor
connector [90] above rear cylinder head.
Figure 4-18 For 2008 Model Year, all Buell engines will come
equipped with a piece of conduit approximately
in. (100mm) long to protect the engine temperature sensor
lead from chafing on the inside of the rocker box. The conduit
will be able to slide as much as 5 inches in order to move it
out of the way to use the special socket to remove and install
the sensor.
7. Slide rubber boot up ET sensor wire.
8. Remove sensor from rear cylinder head using ENGINE
TEMPERATURE SENSOR SOCKET (Part No. SNAP-ON
M3503B).
TOOL NAME
2.40 INTAKE
4.2 AIR CLEANER
NOTE
sm00232
Figure 4-16. Location of Engine Temperature Sensor in
sm00861
3.94
Figure 4-17. Engine Temperature Sensor Connector [90]
Rear Cylinder Head
(Typical)
2008 XB Service: Fuel System 4-11
4.7