Attention! When working on the fuel system, you must first remove the pressure in the system.
Fuel line and injectors
Removing
1. Disconnect the negative battery terminal.
2. Remove the vacuum pipe from the fuel pressure regulator (arrow).
3. Remove the fuel supply hoses and return hoses from the fuel line.
4. Disconnect the electrical connectors and hoses from the front of the fuel line.
5. Remove the electrical connectors from the fuel injectors.
6. Unscrew the fastening bolts (indicated by arrows) fuel line and remove it from the intake manifold. Remove the seal from each nozzle.
7. Remove the injectors from the fuel line and remove the upper O-rings, which must be replaced with new ones.
Installation
1. Installation is made in sequence, return to removal.
2. Consider the following points:
- install new O-rings on the injectors;
- to facilitate installation, lubricate the o-rings with engine oil and install the nozzles and fuel line in place so that none of the o-rings is displaced;
- Start the engine and check the fuel system for leaks.
Fuel pressure control
Removing
1. Disconnect the negative battery terminal.
2. Disconnect the vacuum tube from the regulator.
3. Place a clean rag under the regulator, loosen the clamp and remove the fuel regulator from the line.
Installation
Installation is made in sequence, return to removal.
Throttle position potentiometer
Removing
1. Loosen the bracket and remove the electrical connector from the potentiometer.
2. Unscrew the two screws and remove the potentiometer from the throttle shaft.
Installation
Installation is made in sequence, return to removal.
Electronic control device (ecu)
The ECU is located in a plastic box that is mounted on the front right side member.
Removing
1. Before removing the ECU box cover, make sure the ignition is off. On automatic transmission models, there are two ECUs in the box. The block that controls the power and ignition system is located closer to the engine.
2. Disconnect the electrical connector by lifting up the locking lever at the top of the connector. Remove the connector from the rear, disconnect the front and remove the ECU from the pins.
3. Lift the ECU up and out of the vehicle.
Installation
Installation is made in sequence, return to removal.
Idle control engine
Removing
1. The idle control motor is located on the side of the throttle body.
2. Release the bracket and remove the connector from the engine.
3. Remove the two screws and remove the idle control motor.
Installation
Installation is made in sequence, return to removal.
Manifold absolute motion sensor
The sensor is located on the intake manifold.
Removing
1. Remove the electrical connector and vacuum hose.
2. Remove the sensor from the manifold.
Installation
Installation is made in sequence, return to removal.
Intake air temperature sensor
Removing
The intake air temperature sensor is located on the back of the intake manifold.
1. Remove the electrical connector.
2. Unscrew the sensor and remove it from the vehicle.
Installation
Installation is made in sequence, return to removal.
Crankshaft position sensor
The crankshaft position sensor is located on the front side of the clutch housing.
Removing
1. Trace the wiring from the sensor to the wiring connector and disconnect it from the main harness.
2. Unscrew the mounting bolt and use the lever to remove the sensor from the rubber sealing ring.
Installation
Installation is made in sequence, return to removal.
Vehicle speed sensor
The vehicle speed sensor is an integral part of the speedometer drive.
Knock sensor
The knock sensor is screwed into the front of the cylinder block.
Removing
1. To access the sensor, apply the handbrake and raise the front of the vehicle. Remove the mudguard from under the engine.
2. Trace the wiring from the sensor to the wiring connector and disconnect it from the main harness.
3. Unscrew a bolt of fastening of the gauge to the block of cylinders and remove the gauge from under the car.
Installation
Installation is made in sequence, return to removal.
ECU system relay
The ECU relay is located in a plastic box that is mounted on the front right side member.
Removing
1. Check that the ignition is off and remove the cover of the box.
2. Disconnect the electrical connector and remove the relay from the mounting plate.
Installation
Installation is made in sequence, return to removal.