Let us spray. 1  When you're at the perfume counter, buying something smelly for your nearest and dearest this Christmas, just don't ask what's in it. 2  When you're at the perfume counter, buying something smelly for your nearest and dearest this Christmas, just don't ask what's in it. Hannah Betts argues you may get a nasty surprise.
Best Answer: When a catalytic converter goes bad it will restrict the flow of exhaust gases through the exhaust system. Basically, if the exhaust won't come out easily, air won't be taken into the engine easily to mix with the fuel to be burnt and give you power.
When an 02 sensor goes bad, your car throws a check engine light, when that light comes on, your car goes into a default mode where it protects itself by dumping the same gas and air mixture regardless of the conditions that would be monitered by the 02 sensors. replaced my fan clutch, flushed, checked hoses, no air pockets, no leaks in coolant system, o2 pump works, radiator questionable but throwing a new on in is my next step. The only thing the worthless dealer told me is that there's no leak in the heads. Should I replace that bad sensor or change my radiator...