alright.... i had many mechanics tell me my injectors were bad so i had the replaced... now it idles nicely but after a few minutes the engine revs up to like 3000 rpm then if you hit the gas a little it goes back down and after a few mins it does it again ...its also running really rich... we have replaced the egr and gasket... and someone is replacing the fuel pressure regulator right now... so if its not those things what could it be? what should i look for later today when i go out there to see if its fixed?

 

Air bypassing throttle valve (air/vacuum leaks), bad IAC valve, really bad TPS. Toyota gas pedal? lol