Faces laying together don't show a nice big face in objmode

I used a curve, then applied some bevel,ext1,ext2,… and I converted this all into a mesh. After that, I deleted a part of the faces. This was necessary, because I want the faces (loads of triangles) to be arranged in different directions then they are after converting to a mesh. So after I made some new faces manually, like I want it, I wanted to fill the gaps that were still not filled. But shift+F doesn’t seem to work for some reason. And when I make some extra faces manually, you still see the edges in objectmode. Problem is, that after smoothing this, and applying a texture, you see that edge that was visible in objectmode. And this does not look nice at all.
[>] How can I make sure that you see one big face in object mode?
It’s very hard to explain. If necessary, I’ll post some pics, just tell me if you don’t understand!

Thank you!

Did you try a RemDoubles?

you may have “stray edges” whereby you have edges and faces connecting odd places.

For example, consider the vollowing shape


A------B
|      |
D------C
|      |
E------F

There are the faces ABCD and CDEF, what if there is a face ABFE? Would you notice it? It would produce extra edges in object view and prohibit the decimator fuction.

and remove doubles may do the trick as well. It can cause the other problem above, and can’t fix it, but it can fix other problems.