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.
Road damage â The outside of the cat can be damaged by hitting solid objects in the road. ie, speed bumps, large rocks etc. Plugged or contaminated â Plugged or contaminated catalytic converters are caused by the wrong sort of fuel in your car.