The fuel pump for the 1992 Jaguar XJS is an important vehicle component. It can either be an electric or mechanical pump and the Pierburg Fuel Pump (Pump Only) is the one suited for your Jaguar XJS. Among vehicles from the past, the mechanical pump was employed. This is worked on by a lobe found on the engine’s camshaft and was thereby fastened to the engine or on the frame rail among the engine and the tank. These days, majority of cars contain the electric fuel pump which is found within the fuel tank and is run by the battery of the vehicle like the Jaguar XJS. The chief purpose of this is to drive the gasoline to the engine by producing positive pressure in the fuel lines. In general, the fuel pump is on at whatever time the vehicle’s ignition switch is on. But this does not mean that the ignition switch is the one responsible for carrying power to the fuel pump. It only triggers a relay which will manage the higher current load that the bump requires in order to operate. However, just like any other vehicle component, the fuel pump can also malfunction after a time. It can come into contact with damage on the armature bushings, brushes, and commutator as well as the gears, rollers, and pump vanes because of ongoing loss of flow and pressure. As the fuel pump abruptly stops operating, the first thing to inspect is the electrical connections of the pump. For more information about replacements and the Pierburg E3000-52985, do take time to browse our website.