I own a 2004 Hyundai Tiburon 2.7L, The issue I am having with my car is when I touch the gas peddle the RPM climbs on its own and holds at 4,000rpm, to get it to drop back down I need to rev it up more, or if I'm driving I put on the cruise control speed it up then turn it off right away to make the revs drop.
I've heard it could be the MAF sensor but I've cleaned it and no help and I have cleaned the air filter as well. The car does not have the catalytic converter its straight piped with resonator please help