Removal
- Disconnect the cable from the negative terminal of the battery.
- Disconnect the connector from the air temperature, pressure, throttle position potentiometer and camshaft position sensors (pic. 1.36).
Pic. 1.36. Fuel system sensors and pipes: 1 - air temperature sensor; 2 - pressure sensor; 3 - throttle position potentiometer; 4 - camshaft position sensor; 5 - vacuum tube of the pressure sensor; 6 - vacuum hose of the vacuum brake booster; 7 - fuel vapor removal pipeline
- Disconnect the fuel vapor exhaust line, the vacuum hose from the brake booster and the vacuum tube from the pressure sensor.
- Loosen the clamp securing the air intake pipe to the throttle body.
- Unscrew the three nuts securing the air filter.
- Remove the filter and air intake pipe.
- Disconnect the oil vapor drain pipe (3. fig. 1.37).
Pic. 1.37. Removing the throttle assembly: 1 - coolant temperature sensor; 2 - idle speed control valve; 3 - oil vapor removal pipe; Arrows - throttle assembly mounting bolts
- Disconnect the connector from the coolant temperature sensor and idle air control valve.
- Unscrew the four bolts securing the throttle body, but do not disconnect the coolant supply hoses to the throttle body.
- Remove the thermal insulation located between the throttle assembly and the manifold.
- Disconnect the connectors from the fuel injectors.
- Remove the wire harness holder.
- Disconnect the wires and tubes attached to the manifold and take them to the right, towards the fuel injection system control unit.
- Disconnect the fuel supply hose with a green mark located in the engine flywheel area (2. fig. 1.38)
Pic. 1.38. Server location (2) and returnable (3) fuel hoses, pressure regulator vacuum tube (4) and wires connecting to «mass» (1)
- Disconnect the fuel return hose with the red mark (3). located in the area of the gas distribution mechanism drive.
- Disconnect the vacuum tube (4) from the fuel pressure regulator
- Unscrew the two nuts securing the fuel distribution line.
- Disconnect the two wires connecting to «mass».
- Moving along the intake manifold, remove the fuel distribution line.
Installation
- Make sure there are two plastic spacers located on the line mounting studs, between the studs and the head
- Remove the glued gaskets on the thermal insulation of the throttle assembly and replace them with new ones, but it is not necessary to glue them.
- Further installation is carried out in the reverse order of removal.