What would cause the throttle to get sucked wide open with no throttle responsecontrol this causes the motor to rev out turnin the car off is the only way to stop it from over reving 3.1v6 w5spd chev?

could be many problems that would cause that but my most popular one is a faulty idle control solenoid..could be a map sensor or an iac valve also ..i would start with those 3 first ,make sure the plugs on them are properly seated and on all the way .