Cadillac 17113273 Throttle Body/Carburetor BODY KIT

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During reinstallation, secure the IAC valve to the throttle body with thread locking compound on the attaching screws and plug in its electrical connector.

After reinstalling the TPS, you should reconnect the cable to the negative battery terminal.

The IAC valve controls idle speed and is checked for resistance and operation. The removal and installation steps are provided, including resetting the IAC valve.

When replacing components of the throttle body/injector assembly, it is important to relieve the fuel system pressure and disconnect the cable from the negative battery terminal. The throttle body should be removed by disconnecting the electrical connector and fuel supply and return lines. The throttle body should also be removed by draining the cooling system, removing the air intake duct and resonator, detaching electrical connectors and vacuum hoses, and removing the accelerator cable and bracket. The upper intake manifold and throttle body can be removed by taking out the ignition coil/module assembly and EVAP purge valve, and then carefully removing the upper intake manifold. The poppet nozzles should be detached by squeezing the tabs together and pulling them straight out. The throttle body can be removed by prying the bracket locking tabs away and pulling the assembly off the bracket. The fuel injector hold-down plate should be removed and the injector can be pushed out of the throttle body. The fuel pressure regulator can be removed by taking off the retaining clip. During installation, it is important to replace O-ring seals, lubricate them with engine oil, and check the filler disc for contamination. The injector should be pressed into the throttle body until seated, and the injector hold-down plate and nuts should be installed. The throttle body should be installed onto the intake manifold bracket, and the poppet nozzles should be snapped into place. The fuel lines should be installed onto the throttle body, and the bracket should be installed. The throttle body seal should be inspected and replaced if necessary, and the throttle body should be installed. After installation, the fuel lines and throttle body should be checked for fuel leakage.

Be careful of hot or moving engine components while checking for a vacuum leak.

Depending on the model year, the electrical connectors from the Throttle Position (TP) sensor and Idle Air Control (IAC) valve or Throttle Actuator Control (TAC) should be disconnected.

Carefully remove the upper intake manifold and detach the poppet nozzles from the intake manifold.

The air cleaner assembly should be removed, and each hose should be tagged with a piece of numbered tape to make reassembly easier.

The fuel injector hold-down plate should be removed and the injector can be pushed out of the fuel meter body.