acting weird
 

im not sure what can cause this but just all of a sudden i was driving along and stopped at a stop sign and it wanted to keep going , i put it in neutral and it starting reving faster, up to 4000 rpm. then back to normal then right back up ... anyone know what could cause that, maybee a bad sensor i heard maybee the tps (some sort od sensor), maybee bad wiring as when it was doing this i would shut off the suv. and it wouldent start, i would have to wait aprox 10 minutes then it would start and it would rev normaly, then i wouod start driving and after a while it would start doing so again.. the engin sign s also on, it shut off once for abnout 1 hour and then its on again.
would apreceate any input...
[:@][:@]