I have a 2005 freelander the 15amp fuse under the hood box it said f3 with motor picture on it what is it for it blows truck wont start put in new one runs then blows runs rough turn the truck of then wont start. help help

1) I would suggest that you get over to the “introduce yourself” section and post a few lines about you and your car, as it is only polite to do so before you start to ask for help.
2) I believe F3 is linked to the CCU but do a search in the box next to your name – It is likely that somebody on here has had this problem before and posted about it.
3) We do NOT drive trucks!!!

Engine box fuse 3 goes to some of the engine sensors. Rave disk is free to download and has drawings.

There's also a number of rave disks available from the link below which cover the repair of other Land Rover products.

land rover rave technical system

rave01 = Range rover P38, Discovery 2, Defender 300tdi/Td5/v8, Freelander 1.8/td4/v6

rave02 = Range Rover P38 and L322, Defender 200/300tdi and v8

rave03 = Range Rover classic tdi/v8, Discovery 1995 onwards mpi/Tdi/v8, Freelander 1.8/L series

The rave disks download as .iso image files. After downloading them you need to use magiciso, 7-zip or winzip type programs to open them, to allow you to copy the rave folder out of the .iso image file.

Try here first.

Introduce Yourself - Land Rover Zone

Are you sure it's an FL2 as in your OP ?