The catalytic converter will be underneath the car in the exhaust system directly after the pipe that connects the header (exhaust manifold (connects engine to the rest of the exhaust)) to the Cat (catalytic converter). there will also be a resonator that is closer to the muffler end of the exhaust. The cat has an O2 sensor in it so you'll know if you get the right one.
This really is a job best performed by a muffler shop.
Retail on these are about $880, but the dealer cost is only about $425
After the exhaust manifold but before the catalytic converter on the exhaust tube.
IT SHOULD BE UNDERNEATH THE CAR BEFORE THE MUFFLER(ABOUT THE CENTER OF THE CAR) JOSE
The oxygen sensor on a 2004 Honda Accord is found on the exhaust system. They are placed close to the catalytic converter so the sensors can properly read the exhaust flow.
It has two. One on the intake manifold and the other in the catalytic converter.
It should last the life of the car if you maintain the car as you should. Let the engine start running rich and do nothing to repair this condition and it will destroy the converter. But keep the engine tuned up and running as it should and you will never have to replace the converter. NEVER had a problem with my 1996 HONDA ACCORD engine and CATALYTIC CONVERTER needed to be replaced at 220,000 MILES.
Yes, it can run but this will destroy the O2 sensor and the catalytic converter.
Cats cost around $150 for an aftermarket one. Not sure for dealer oem price
Yes, along with lower fuel economy, and it is highly illegal.
The oxygen sensor on a 1999 Honda Civic is located on top of the catalytic converter. The catalytic converter is under the car.