I own a Rodeo Isuzu 2001, automatic, 4 cylinder and have had a problem for some time regarding the rpm/accelerator. When I am driving, especially uphill or when I accelerate after a red light turns green, the rpm shoots up to 4 or 5 and the car kind of slows down. I take my foot off the accelerator until it corrects itself. I am thinking of changing the throttle position sensor and the accelerator sensor, but before making that expense, i would like your opinion. I just hope is not the transmission. Thanks for your advise.