Fuel Injection System problems of the 2002 Toyota 4Runner

While driving down the interstate, the vehicle lost all power. This situation could be fatal, at highway speeds. Luckily, nobody was injured. Further investigation revealed a faulty rheostat in the throttle body of the fuel system. The rheostate failure causes the butterfly valve to close, thus not letting enough air into the intake manifold. Due to the lack of air, the engine "stalls out", causing the vehicle to decelerate very quickly. Replacement of the throttle body corrected the problem, with no further incicents occuring.

The car's resting idle will suddenly surge causing more brake pedal pressure to be applied. At first, I thought it was the air conditioning kicking on, but the ac is not on. The surge in idel speed is significant enough to move the vehicle forward, making for many close calls.