I try to get Furnok to leave but all he does is repeat his normal dialogue. i have try console commands and it does not work.
an axe to the head usually does the trick, I'm sure there are other methods too that are a touch more elegant and less violent.
I'm still confused because I have tried killing him but he still wont leave like his dead body hangs around
Have you had him reincarnated? This can cause NPCs to be more like regular party members, and also make them act differently sometimes. Also, as Allyx said, once any party member is dead you can click on the little icon that appears on the top-left corener of their portrait to dismiss their character. The icon has a question mark on it.
TO answer you question of reincarnation? I don't even know how to so. But thanks I didn't know I could dismiss them that way thanks you
You can speak to Jaroo the Druid about healing, he can reincarnate dead characters, whereas Terjon can resurrect dead characters instead. Both charge a sizable fee for doing so but I believe reincarnate is cheaper and works exactly the same way as resurrect... Which isn't as it should be, the spell should randomly choose from a list of alternative races and species that a reincarnated character could be reincarnated into, which includes both standard player races and various other animals.