Power Injection Specifications General characteristics Type of injection system: C16 NZ, C16 NZ2, X16SZ and C18NZ - Multec central fuel injection system 20 NE, C20 NE and 20 SEH, (models...
General description of the injection power system 1. All Vectra engines can be run on unleaded gasoline. See Section 5 for more information. Please note that models with a catalytic converter must only be run...
Fuel Injection System — Precautions Warning: Many of the procedures in this subchapter require the removal of fuel lines and connections. See precautions before working on the fuel system!...
System check — general description 1. In addition to checking the main electrical circuits, nothing else from the components of the fuel system can be independently checked. 2. If damage occurs,...
Air filter — removal and installation Note: If an air filter is installed "round type", follow the procedure described in Section 4A . Removing 1. Detach the coolant expansion tank hose from the...
Air block — removal and installation Removing 1. The air block, if equipped, is attached with two or three bolts to the top of the throttle body. Pay attention to the direction and connections of...
Air temperature control — description and verification Description 1. On models with Multec systems, the air temperature is controlled by a controller installed in the air unit. When the engine is cold started, the...
Fuel System Depressurization — General Description Warning: The following procedure simply reduces the pressure in the fuel system. Be aware that fuel is still in the system components, so take precautions...
Fuel pump — check 1. If the fuel priming pump is serviceable and working, when you turn on the ignition, you will hear a hum from under the rear of the car. If the engine does...
Fuel pump — removal and installation Note: Before you start, see Chapter 2 . Removing 1. The fuel pump is located on a bracket under the rear of the vehicle, or on the right side of the spare...
Fuel pump — removal and installation Removing 1. Depressurize the fuel system ( Chapter 8 ), then remove and reinstall the fuel filler cap to equalize the pressure inside and outside the tank 2....
Fuel pump relay — replacement The relay is installed in the relay box in the engine compartment ( Section 12 ). If there is more than one relay, the black base fuel pump relay.
Fuel tank filler pipe — removal and installation Removing 1. Pump out all fuel from the tank into a clean container. 2. Lift up the edge of the seal base surrounding the filler neck and unscrew the retaining...
Fuel tank — removal and installation Note: Before you start, see Chapter 2 . Removing Single overhead cam models 1. The procedure is the same as described for models with carburetors. See Section...
Sensor in the fuel tank — removal and installation Note: Before you start, see Chapter 2 . Removing Single overhead cam models 1. Remove the fuel tank (guided by Chapter 16 ), if it is needed. Note that only...
Fuel flow damper — removal and installation Note: Before you start, see Chapter 2 . Removing 1. The fuel flow damper is located on the fuel priming pump bracket under the rear of the vehicle on the right...
Gas cable — removal, installation and adjustment Removing 1. This procedure is basically the same as described in Section 4A . But also pay attention to the following. 2. Not all models are equipped with an...
Idle mixture — check and adjust Note: On models with a catalytic converter, the idle mixture cannot be adjusted, and on models with the Motronic system, the idle speed cannot be adjusted....
Fuel pressure regulator — removal and installation Note: Before you start, see Chapter 2 . Removing Single overhead cam models (except Multec) 1. Disconnect the negative cable from the battery. 2. For improved...
Idle speed regulator — removal and installation Note: Idle speed adjustment is not possible on models equipped with the Multec system as it is controlled by the ECU. be guided Chapter 1 . Removing Single...
Throttle position sensor — removal and installation Removing Single overhead cam models 1. Disconnect the negative cable from the battery. 2. Disconnect the wiring from the throttle position sensor (see...
Air flow mass tape meter — removal and installation Removing 1. Disconnect the negative cable from the battery. 2. Disconnect the electrical wiring from the tape mass air flow meter and from the inlet air...
Fuel injector (Multec system) — check 1. If there is a multimeter of sufficient sensitivity, it is possible to check the resistance of the injector winding. First, disconnect the injector wiring as...