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.
Here are five signs that something may be wrong with your catalytic converter: Your vehicleâs fuel efficiency suddenly drops. Your vehicle doesnât accelerate when you step on the gas pedal. Your vehicle may refuse to start. Your vehicle fails an emissions test. The MIL or Check Engine light comes on.