No And most companies will not even send them to a California address
No, that will not work. A restricted catalytic converter will need replaced.
No, the catalytic converter has nothing whatsoever to do with your defrost system.
exhoust vave
It's not up to you, when to "make the catalytic converter to work"!... The catalytic converter will provide the chemical reaction alone only @ 400 > degree, no options! See/Google "how it works" and that will help you understand how and why!
I would not touch it except to install a converter.
I believe bank 1 sensor 1 is Passenger side before catalytic converter. sensor 2 is after catalytic converter. bank 2 sensor 1 is Driver side before catalytic converter. sensor 2 is after catalytic converter.
The oxygen sensors on a 2005 Ford Freestar are located in the exhaust system. There are typically two sensors: one upstream (pre-catalytic converter) and one downstream (post-catalytic converter). The upstream sensor is located on the exhaust manifold or just before the catalytic converter, while the downstream sensor is located after the catalytic converter. To access them, you may need to lift the vehicle and work under it.
A catalytic converter changes unburned hydrocarbons into carbon dioxide and water vapor. It's a simple chemical process, and like most chemical processes, it will either generate or absorb heat so in this case, since the catalytic converter requires heat to change the state of the hydrocarbons, it either has to be heated or it will operate quite effectively using the exhaust heat. Note, if the engine is operating efficiently there should be very little for the catalytic converter to do.
Many of the compounds that make your engine oil work better on the INSIDE of the engine are also "poisonous" to your catalytic converter as your engine starts to use oil. The nice thing about catalytic converters, they burn unused hydrocarbons that come out the exhaust. You may not KNOW that your engine is burning oil until the catalytic converter gives out or even gets plugged up. Watch the oil level in the crankcase. If it drops with no evidence of leaking, it's burning and your catalytic converter will die.
To unblock a catalytic converter, first, ensure the vehicle is cool and safely elevated. You can try using a high-pressure air hose to blow out any debris or soot. If that doesn't work, consider using a catalytic converter cleaner, which can be poured into the fuel tank. In severe cases, removal and physical cleaning or replacement might be necessary.
A quality aftermarket catalytic converter will work fine as long as everything else is in good working order.
It must get hot to perform at it's best.