Fuel Pump Module - Improved
04-11XJS Enhancement Program S384 -
Install Improved Specification Fuel Pump Module
MODEL:
93 MY XJS up to VIN 185848
DATE:
10/93
ISSUE:
To prevent loss of fuel pressure, all XJS vehicles beginning with VIN 185849 incorporate an improved specification fuel pump. This improved fuel pump is being fitted to vehicles as part of the 1992 MY XJS enhancement program (S384).
To address 1993 MY vehicles built with the old style pump, the XJS enhancement program (Improved Specification Fuel Pump, Technical Bulletin 04-7) has been extended to include 1993 MY 4.OL XJS vehicles up to VIN 185848.
ACTION:
During routine service visits of 1993 MY XJS vehicles up to VIN 185848, check if the VIN is on the list of modified vehicles. If the VIN is not on the list, check for an S384 label adhered to the left underside of the hood, indicating that the vehicle has been modified.
If the vehicle is within the affected VIN range and has not been modified, use the following procedure to install the improved specification fuel pump module.
CAUTION:
The following operations result in the presence of fuel and fuel vapor. Be sure that the work area is well ventilated. Follow all Safety Precautions detailed in the Fuel Systems section of the Service Manual.
^ Open the luggage compartment and remove the right side and front interior trim panels.
^ Locate the fuel pump relay, which is silver or blue with a yellow relay base.
^ Depressurize the fuel system by starting the engine and removing the fuel pump relay. Run the engine until it stalls. Crank the engine for several seconds after the engine has stalled to ensure that the system is fully depressurized.
^ Record the preset radio stations. Disconnect and remove the battery.
^ Remove the fuel tank. Refer to XJS Service Manual section 19.2, operation 19.55.01 for Coupe and operation 19.55.01/70 for Convertible.
^ Disconnect the breather hose from the evaporative loss flange. Release the retaining ring using tool JD 174 and remove the flange.
CAUTION:
Operations within the fuel tank must ONLY be performed using Jaguar special screwdriver JD 175.
^ Loosen the fuel feed and return hose clamps at the fuel pump module.
^ Disconnect hoses from the module.
^ Remove the original fuel pump module and holder from the fuel tank.
^ Place the new module holder into the fuel tank.
^ Place the new fuel pump module into the fuel tank. Align the cut-out on the bottom edge of the module with cut-out in the holder. Be careful not to fold or kink the extender pick up filter.
^ Engage the fuel pump module tabs into the holder with a twisting motion.
^ Secure the holder onto the module with a plastic strap. Refer to Fig. 1.
^ Align the new module holder with tabs on the internal bracket and fit the holder onto the bracket.
^ Connect the fuel feed and return hoses to the module.
^ Tighten the hose clamps.
^ Install a new evaporative loss flange sealing ring.
^ Install the flange and retaining ring.
^ Refit the breather hoses to the evaporative loss flange.
^ Install the fuel tank to the vehicle using new fuel feed and return line "O" rings and a new filler neck "O" ring.
^ Install the fuel pump relay.
^ Refit the luggage compartment trim panels.
^ Install and connect the battery. Reset preset radio stations and clock.
^ Clean the left underside of the hood and adhere the S384 label.
WARRANTY INFORMATION:
Fault Code: X810
The following 1993 MY XJS vehicles have been modified with fuel pump EBC 10123/K and do NOT require modification:
VINS: 184814 185822
185354 185834
185528 185836
185820