you might want to check for vaccuum leaks or the like, i've got an 86 ford that does the same thing sometimes and it's got a cable throttle.

i have never seen a car that shuts off the engine if you press both pedals.

this is bullshit logic, tractor pull trucks have engines bigger than anything you could stop with the kind of brakes you could fit behind those wheels. we're talking production cars here, by law, street legal cars must have brakes strong enough to overpower the engine, that is to say, you must be able to push the brake pedal down, floor the gas pedal, and not move the car.

hell, i've got an 86 Bronco II that occasionally tries to surge and ram the guy in front of me at a light, this isn't really a new problem.

so, you totally just referred to us as 'the colonies' nice.