Know the feeling,and stand on the brake barely stops it.Found that my van was the throttle cable came off the bracket right behing those big rubber intake tubes.Simply pull the tubes and slip back onto bracket and use a twist tie to keep it there.Easy fix for a scary situation.Hope that solves ur problem

Be sure to clamp ur air intake tubes back.
Gerald Heading- Ford van driver for 30 years All the criedintials I got,do my own repairs. Let me know if that helped
g_heading@yahoo.com