95 jetta Idling Problem!

First time using the site, hope its what Im looking for :)

Ok, a while back my car started Idling up and down while I was in neutral. The problem wasnt that big of a deal. However, over time it is doing it more often, and even when I am in gear and driving, Kinda unsafe. It sounds/feels like someone is pushing on my gas pedal when I am not. (the pedal doesnt move) Also, If I turn off my car while it is doing this, or shortly often, it floods and Im unable to restart it for a while. My local carshop has no clue what It could be, so just knowing what the problem is, hopefully we can fix it.

Any Info/help I can get on this would be much appreciated.

EDIT: After I try to turn it on after it floods, It smells of gas. and has some smoke.

UPDATE!

Ok, so we put a new ignition switch in and it didnt do anything for about a day, then it stoped idling oddly. Before, it idled at a little above the 10, now it idles a little below it. Was going great for about 2 days, with a little bit of light start up problems, nothing to get overworked about. However, now it wont start. We took out the fuel filter, which didnt seem that bad/dirty and blew out the junk in there and put it back in and it started. Enough to get me home from work anyway. When I got home, i turned it off and tried to start it again, but It didnt work.

So, my problem went from a idling/flooding to a flooding/no start issue. I dont know about cars very much but this is getting aggrovating lol.