I've just stripped all cables and chain from a badly kept bicycle and replaced them.
I've correctly adjusted the rear derailleur and it works great.
However, front derailleur which only has 3 gears isn't working as expected.
It takes 2-3 steps on the gear to actually change 1 gears.
The range seems to be 1-6, instead of 3.
The gear is the type that is round, circular next to the handles.