Shift in the Demand Curve. A shift in the demand curve occurs when the whole demand curve moves to the right or left. For example, an increase in income would mean people can afford to buy more widgets even at the same price.
Once they fail they can do massive damage like I've described above. Clogged catalytic converters cause the engine to stop running all together, or at the very least you would notice that the engine would no longer rev or accelerate the vehicle (lack of power). Customer: replied 7 years ago.
A catalytic converter converts the harmful exhaust gases produced by the engine into less harmful emissions before they leave the vehicleâs exhaust system. Symptoms of Wear or Failure. 1  Check Engine Light may illuminate. 2  Vehicle may fail emissions inspection. 3  Exhaust gas may have unusual smell.