Look at the cruise control unit (the black box where your throttle cables meet that is dead center on your firewall). On the driver's side of the box, look at the cable coming out of the box. Is it in there FULLY? Lift the cable up and push it 'up and into' the box to make sure it is not hung up. If the cable does not snap back in- then it's out and has no problem clearning the box.
So then you check the other areas of the throttle cable. Then you check to make sure when the gas pedal is pushed- the throttle cable is not getting hung up where it ends (where it connects to the throttle plate- meaning the spring that flaps the throttle plate is still good).
Examine the box for cruise control first (what I said in the first paragraph)