GM 17106681 Sensor,Throttle Position

The Throttle Position (TP) Sensor is a potentiometer connected to the throttle shaft on the throttle body, providing a voltage signal that changes with the throttle blade angle. The PCM calculates throttle position based on this signal, and fuel delivery is adjusted accordingly. Testing involves checking the connector for damage, measuring voltage at Terminal B (around 0.5 volts), smoothly operating the throttle to WOT (voltage should follow without exceeding 5 volts), and checking for proper ground and 5-volt reference signals. Removal of the TP sensor requires disconnecting the negative battery cable, removing the air cleaner, TP sensor connector, and TP sensor mounting bolts, followed by installing a new 0-ring on the TP sensor and reassembling. For the 4.6L engine, the throttle body assembly must be removed, and then the TP sensor can be detached, with the 0-ring discarded and a new one installed before reassembly.

The CMFI or CSFI component tightly controls fuel supply in the engine located at the lower intake manifold center. Among other features, a CMFI system has an adjustable aluminum air intake plenum and one non-serviceable fuel injector unit; while a CSFI system comes with non-adjustable air intake plenum, six individually controlled fuel injectors and it incorporates a Mass Air Flow sensor. The PCM tracks various engine parameters by means of sensors and energizes the fuel pump briefly upon ignition. Fuel is delivered into cylinders via poppet nozzles in tubes by a high-pressure electric pump found inside the tank of the fuel regulated by a pressure regulator of fuel. This is accomplished by an Idle Air Control valve that regulates additional air flow. Multiple steps must be taken for upper intake manifold removal such as disconnecting battery, relieving fuel pressure, removing components as well as disconnecting different connectors together with hoses. Installations are done inversely to their removals. A similar procedure which involves disconnection of battery, relief from pressure on fuels and also taking away related components is used to remove CMFI as well as CFIS fuel injection units (CMFI). Fuel Injectors are inspected for faults and replaced if necessary. Idle Air Control (IAC) Valve checks resistance and operation during idle speed control checkups. Several steps for removal and installation including resetting IAC Valve are provided in this respect. Intake Manifold Tuning Valve (CMFI) must be checked for replacement when necessary. Fuel Injector Replacement (CSFI) calls for detachment of the fuel meter body from its installation place back again into it after fixing it up (CSIF). The Fuel Pressure Regulator (CSFI) would be replaced following o-ring replacement among other specific steps. Throttle Body Removal/Installation (CSFI): Disconnect various components , ensure proper cable operation etc. In details, Throttle Position Sensor (TPS) checks involved backprobing, removal of mounting screws and alignment during installation.

To replace the fuel injector, disconnect the negative battery cable and, if there is Delco Loc II audio system, the lock out feature should be off. Disconnect the electrical connector at teh injector After that, you have to take of the injector retainer screw and the retainer. Exercise some care when pulling out the injector from the fuel meter body. If reusing the injector change the upper & the lower O-rings where the upper O-ring must be fitted in the groove while the lower O-ring must be flat on the filter element. Place the injector assembly vertically down into the fuel meter body such that the connector end rests at the wire harness grommet opening. Fix the injector shaft to the retainer and screw the retainer to the injector using a thread lock. Responding to the negative battery cable, turning the key to the 'On ' position that pressurizes the fuel system to check the leaks around the injector. Connect electrical connector and then engage the engine to ensure normal working condition. With the pressure regulator assembly, we find that it has a highly compressed spring, and that is why only a dealer or a repair shop may need to fix this part. The IAC valve requires servicing; therefore, turn off the car's battery, take off the air cleaner, and disconnect electrical contacts from the IAC valve. Disconnect the two retaining screws that join the valve to the throttle body, and pull it out noting that if reassembling then a new O-ring should be applied. Check distance of the end of pintle to the mounting flange should not exceed 1-1/8 inches if it is greater than this then use a flat head screw driver or any suitable object to squeeze the pintle into the valve assembly and check the extension. Place the valve in the throttle body opening, put and tighten the screws and reconnect the electrical connector. For IAC valve we do not have to adjust anything since it has an automatic reset. To remove the throttle position sensor you must first remove the negative terminal on the battery then remove the air cleaner housing and pull the electrical connector in the sensor. Take out two screws in the mounting area and then pull off the sensor from the throttle body. For installation insert the slot available at the rear of the sensor on the shaft of throttle body and then fasten it with the mounting screw In fact, this type of sensor is no way adjustable. The removal process is simply a mirror image of installation; thus making the process a rather easy one.

The Throttle Position Sensor (TPS) is a potentiometer attached to the end of the throttle shaft on the throttle body. It senses changes in output voltage to determine fuel delivery according to angle of throttle valve. Irregular bursts of fuel and an unsteady idle could be caused by a worn-out or slack TPS. The position sensor is located on one side of the throttle body. Look for loose terminals and wires, otherwise this sensor will not work properly. Prior to checking TPS, make sure that supply voltage and ground circuit are operational. Unplug the electrical connector and measure voltage across it, which should be about 5.0 volts. Otherwise, examine wiring too if not okay. To test its operation, reconnect with probe touching the dark blue wire terminal from behind as you gradually open up until there is smooth rise in voltage; otherwise replace it with another one as earlier mentioned above. In order to install a new TPS, remove some parts first in order to gain access for it including: disconnecting the electric connector while separating mounting screws too; besides these actions they have installed a new O-ring plus aligned TPS over which tightening had been done through screwing those four screws so that their ends only would remain visible underneath its groove where replacement must take place when necessary!

The Throttle Position Sensor (TPS) is a potentiometer attached to the end of the throttle shaft on the throttle body. It senses changes in output voltage to determine fuel delivery according to angle of throttle valve. Irregular bursts of fuel and an unsteady idle could be caused by a worn-out or slack TPS. The position sensor is located on one side of the throttle body. Look for loose terminals and wires, otherwise this sensor will not work properly. Prior to checking TPS, make sure that supply voltage and ground circuit are operational. Unplug the electrical connector and measure voltage across it, which should be about 5.0 volts. Otherwise, examine wiring too if not okay. To test its operation, reconnect with probe touching the dark blue wire terminal from behind as you gradually open up until there is smooth rise in voltage; otherwise replace it with another one as earlier mentioned above. In order to install a new TPS, remove some parts first in order to gain access for it including: disconnecting the electric connector while separating mounting screws too; besides these actions they have installed a new O-ring plus aligned TPS over which tightening had been done through screwing those four screws so that their ends only would remain visible underneath its groove where replacement must take place when necessary!

Various engine sensors and components have checking procedures,the engine coolant temperature (ECT) sensor is a thermistor that changes resistance with temperature, and a failure in the circuit can cause trouble codes. The resistance should be measured when cold and warm while ensuring reference voltage from PCM is around 5.0 volts for the verification. Manifold Absolute Pressure (MAP) Sensor monitors changes in intake manifold pressure then varies its voltage output accordingly. Look at the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes. Intake Air Temperature (IAT) Sensor acts as a thermistor where you can measure its resistance at different temperatures to make sure it changes as expected. Also, use a scan tool to monitor the IAT sensor for performance. The oxygen sensor in exhaust detects oxygen content which you can check its millivolt signal while warming up your engine. Check whether the oxygen sensor heater has correct voltage or not. Vehicle Speed Sensor (VSS) provides speed data to PCM which can be checked for reference voltage. Depending on the type of engine, Camshaft Sensor and Crankshaft Sensor should be checked for resistance and proper signal output. Finally, Knock Sensors detect engine knock which should be checked for reference voltage and resistance. If any component fails these checks, replacement may be necessary.

Open the fuel injector rail pressure release valve, then disconnect the cable from the negative terminal of the battery before turning off the anti-hood jacking system and on Delco Loe II audio system, do the same. Covers and plates, air cleaner housing assembly, EOx20EGC1100 adapter, and gaskets should be removed. The fuel pressure regulator is incorporated in the fuel meter cover and if the assembly is being worked on or the fuel meter cover is being changed, the entire holder has to be replaced. Disconnect the electrical connectors from the fuel injectors, remove the fuel meter cover screws and then remove the fuel meter cover. Take out the gaskets and clean out all previous gasket material used as they are not to be reused. Clean the metal casing and any lenses which are on the top or sides of the cover if it is located in a retail store, replace the gaskets and seals if required. When refitting the fuel meter cover use the Loctite 262 on the screws before reconnecting the electrical connectors to the injector and the negative terminal of the battery. Ensure to do the check with the engine off, but with the ignition on prior to reinstalling the air cleaner assembly. When replacing fuel injectors ensure that they are of the exact part number, disconnect the connectors and finally dismantle the fuel meter cover assembly using the special spanner but without having to remove the gasket. Remove the injectors, remove the O-rings and filters then check for contamination. Before you fit the new O-rings it is important to ensure that they are soaked in automatic transmission fluid. After putting the injectors properly in place, equally replace the fuel meter cover. By doing so you will ensure that there are no more leaks after having reconnected the battery. For the throttle position sensor, one should remove this component from the throttle body but should not use any liquid cleaners for the same and then fix the lever in the right manner when reinstalling this component. For the idle air control valve, as given in the procedure disconnect the connector then disconnect the valve, remove the old gasket and make sure that the new one fits correctly. This pintle should be adjusted as required prior to being reattached. To disassemble the fuel meter body assembly, first, disconnect the connectors, then uninstall the assembly and undo the fuel lines connection also note the position of the nut for reassembly. Ensure that gaskets have been replaced well and all joints are well tightened. For the throttle body assembly there should be disconnecting of all connectors, removal of linkages and the throttle body together with removal of the gasket will also be dumped. Wash the assembly without immersing any delicate parts, look for signs of wear and tear and replace the IAC valve and TPS. Tighten all the joints, check that there is no interference of the accelerator pedal, and connect the negative terminal of the battery. They are to check for oil leaks, warm up the engine and also to adjust the idle speed. When you find it necessary, then follow the laid down procedures of synchronization and alignment.

The manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes.

Yes, this should come with the necessary gasket/0-ring needed to ensure proper connection