I'm glad to see you decided to ignore what I said earlier.
On second thought, you could probably find the some of problems in the meshes (textures would have nothing to do with this), but I have no experience whatsoever creating or editing meshes. There are tutorials on how to do so, though, and they should also tell you what programs you can use.
All of the programs Mootilda list only show you the textures, and the textures won't show you any problems with the meshes.
I googled 'sims 2 how to make meshes' for you and
this was the first search result, although there were many more you might want to check out. This one suggests using Milkshape for mesh-creation (and therefore, you can assume you can also view them with it).
That said, it's entirely possible that even viewing the meshes won't help you see any problems with them, especially since you have no experience making them, and you'll just have to live with sorting through your CC ingame/ in Body Shop like the rest of us. The thing that you want - a convenient all-purpose CC preview program - does not exist. That's what Body Shop is for.
You might want to make things easier for yourself by sorting through your CC properly and NOT have a whole bunch of poorly named files. Clean installer helps you with this, if you use a lot of Sims2Packs. If you turn on debug mode ingame, you can also see the tags of the files in CAS, making it easier to delete the right ones. But all of this does require effort, and yes, it is slow and tedious, but that's how it is with this game. Sorry.