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.
If the 02 is bad or throwing a code because of a clog in the exhaust system like a bend in the piping or a clogged cat, it would cause some back pressure, affect the 02 sensor and stop exhaust scavenging would have exhaust still left in the combustion chamber, perhaps harming it and POSSIBLY over heating. 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...