Note. The following procedure only applies to models with the F8Q engine. On F9Q engines, fuel cut is controlled by the electronic injection module.
Description
1. The fuel shut-off valve is located at the end of the high pressure fuel pump. It is designed to cut off the fuel supply when the ignition is off. If there is a break in the valve winding or the wiring of the power circuit, the engine will not be able to start. The same will happen if the valve plug is stuck in the closed position. If the plunger gets stuck in the open position, the engine cannot be stopped by turning the ignition off.
2. If the valve winding is damaged and the engine cannot run, temporary repairs can be made by removing the valve as described in the following paragraphs. Install the valve body without the plug and spring. Insulate the wire so that it cannot touch the ground. The engine can now be started normally, but the lever on the fuel pump must be used to stop it (or turn off the engine by shifting into gear).
Without coded electronic unit
Attention! Keep dirt out of the fuel pump. When installing, use a new sealing washer or sealing ring.
Removing
1. Disconnect the ground cable from the battery (contact the head Engine electrical equipment for Scenic models).
Attention! If the car radio in your car is coded, make sure you know the code before disconnecting the battery.
2. Remove the rubber boot (where applicable), then loosen the terminal nut and disconnect the wire from the top of the solenoid valve.
3. Carefully clean the area around the valve, then unscrew and remove it and remove the sealing washer or o-ring. Remove the plunger and spring if they are left in the pump. Squeeze the hand filling pear (where applicable - refer to Section Filling and bleeding the fuel system), to wash away the dirt.
Installation
1. Install in reverse order, use a new sealing washer or sealing ring. Tighten the solenoid valve to Specifications effort.
With coded electronics
Note. A special kit is used to drill out the screws securing the block to the fuel pump. Use new screws when installing.
Removing
1. The coded solenoid valve is attached to the left side of the fuel pump.
2. Disconnect the earth cable from the battery (contact the head Engine electrical equipment for Scenic models).
Attention! If the car radio in your car is coded, make sure you know the code before disconnecting the battery.
3. On models with a Bosch fuel pump, disconnect the throttle cable from the lever on the pump. Remove the crankcase breather oil separator from the left front of the engine to gain access to the solenoid valve mounting bolts.
4. Now you need to drill out the heads of the mounting bolts. If a Renault kit is available, position the pipe on one of the bolts and drill a 4.0 mm deep hole in it using a 4.0 mm drill (lightly oil the drill bit to make it easier to drill). Remove the mounting bolt. Repeat the procedure with the remaining bolts.
5. Disconnect the wiring from the valve. Remove the plastic cover and unscrew the valve.
6. On models equipped with a Lucas fuel pump, the fuel pump must be removed from the engine to replace the solenoid valve.
7. After removing the pump, remove the protective inserts from the valve.
8. Protective inserts are bolted. Now you need to drill out the heads of these bolts so that you can remove them as described above.
9. Disconnect wiring. Remove the cover and unscrew the valve.
Installation
1. On models equipped with a Bosch fuel pump, tighten the valve retaining nut and install the plastic cap. Tighten the new mounting bolts until their heads break off.
2. On models equipped with a Lucas fuel pump, tighten the valve to Specifications effort. Install the cover on the valve, making sure that the wiring is correctly routed. Install the protective inserts using new bolts. Make sure spacers are properly installed (where there are). Tighten the bolts, then turn the heads off the bolts. Install the fuel pump to the engine.