Can someone help me out?
 

Hey, I bought my mazda mx3 v6 in june and it was running fine after i fixed a few things, But now It seems to "rev" up out of no wheres.. when im in netrual it will juss rev all the way up to 3 - 31/2 and then stall and wont start again untill 5 or ten minutes after.. does anyone know what would cause this? the idle just revs out of nowheres and it does it to the point where i cant drive it at all. any feedback would be awsome.