So i've noticed that my gas pedal seems rough. Before, the gas pedal went down smooth. But now, i have to give it more pressure, it seems that it's stuck then it engages, but i have to do it soft otherwise it'll go full throttle. When the car is off, the pedal is real smooth. I checked under the hood n the hook on the throttle feels just like the pedal. Any idea what might b going on here? Already added WD40 on the throttle body cable n it didn't work.