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.
Fix Catalytic Converter. Catalytic converters are a sort of devil's bargain for many car owners. They do a lot to clean the emissions of the vehicle when it's operating, but they are tricky, sealed, and heavily regulated units that, when they go bad, affect both the performance of the car and its ability to be legally licensed for road use.