Fuel Pressure Release (4.0L)
- On XJS, open trunk. Locate and disconnect fuel pump relay in right front corner of trunk. Relay is front-most relay (Silver relay with Yellow connector).
- On XJ6, open hood. Remove heated oxygen sensor/fuel pump relay from relay block. See Figure . On all models, start engine and let idle until engine stalls. Turn ignition off. Install heated oxygen sensor/fuel pump relay.