If you want to cleanthe throttle plate, theres a safe way. Turn the key on, engine off. Set e brake and put it in gear(both auto or manual) then have some one press the gas pedal to the floor and hold it down. The butterfly will open right up. Clean away, but be very gentle. Also, dont use carb cleaner, use throttle body cleaner, much more gentle. You may have to reset the idle after cleaning if it was really gunked up.