Haltech F10 Manual do Utilizador descarregar pdf (Página 20)

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 p ass 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 calibr ated using the programmin g 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 10kΩ.

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 valu e 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 d amaged.

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 exh aust 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

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Haltech F10 Manual do Utilizador Página 20

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