Haltech F10 - Manual (Page 20)

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1.3.4. The Throttle Position Sensor (TPS)
The throttle position sensor is mounted to the throttle butterfly shaft to measure its rotation. A
TPS is common on many late model engines and the Haltech sensor should attach with little
or no modification. The throttle shaft must protrude from the side of the throttle body. This
may require the machining of the throttle body or the manufacture of a new throttle shaft. The
inner mechanism of the sensor rotates with the shaft. If the shaft is round then file a flat
surface on the shaft so that it will pass through the sensor assembly. The TPS should be
mounted against the side of the throttle body, using two screws, such that the throttle shaft
and the sensor mechanism can rotate freely. The absolute range of sensor movement is not
important as the sensor can be calibrated using the programming software.
Your engine may have a Throttle position sensor already fitted and it is often possible to make
use of this TPS. The Haltech supplied TPS has a resistance value ranging from 0 to 10k
Ω .
The resistance value of the installed TPS does not have to be the same since the ECU uses a
throttle calibration function to determine the position of the throttle based on the signal
received from the TPS. Be sure to wire the TPS so that the ECU sees a closed value when the
throttle is closed, the Engine data page field “throttle position” should read “closed” or “0%”
when the throttle is closed.
Note: M ake sure that the axis of rotation of the shaft is exactly aligned with the
axis of rotation of the sensor. Also, do not use the TPS as a throttle stop. In
either case, the TPS will be damaged.
F10A and F10A-8 Only
1.3.5. Mount Optional Exhaust Gas Oxygen Sensor
The optional exhaust gas oxygen sensor must be mounted in the exhaust pipe near the exhaust
header or extractors, usually after the collector. The sensor uses the exhaust gas to detect if
the engine is lean or rich. M any late model engines already have provision for an exhaust gas
oxygen sensor and the sensor provided should fit any standard exhaust mount. Some exhaust
systems have the sensor mount up to around half a meter (2 feet) down stream from the
exhaust headers.
If the exhaust system does not have an existing sensor mount then a new mount will have to