i doubt it gets stuck at full throttle unless she was hitting the gas full throttle, yes she couldve turned ignition off. i wouldve just slammed it into neutral then shut it off and coast to safety
not too sure what you mean by it, does it do it constantly, when you just start up? driving, could be a sepentine belt if im imagine it correctly, i would have to hear it
never fix a leak with duct tape or electrical tape, with the pressure it wont hold up. you can always ask the dealer , there will most likely be a price,