a pic would go a long ways. whats up with the return spring(s)? if you experience a "run away" throttle situation, just click the key off one click. kills the motor, doesnt lock the wheel. you should also be able to check all this, at home, without even starting the car. stomp the pedal a few times, and go out and look. if it's hanging up, dont drive it, until it's fixed. the liability of knowing there's a problem, and continuing to drive, can cost you everything.