Part number for throttle position sensor/fuel injector?

[villagehoppa]

Hi There, am having trouble with my fuel injection engine revving up and down on idle so thought I would replace the throttle position sensor for a start. Trouble is it seems to share the same loom as the fuel injector and that connects to a connector to the main loom? Anyone had the same issue and indeed know the correct part number for a 1.3 EFI throttle position sensor? Any help would be great please...