Not legally
The oxygen sensor on a 1999 Honda Civic is located on top of the catalytic converter. The catalytic converter is under the car.
How much does it cost to replace the catalytic converter on a 1999 Toyota Tacoma
Your check engine light will come on and you will fail emissions.
Yes.
The catalytic converter bolts to the exhaust manifold on the rear of the engine on a 1999 Chrysler Town and Country.
Replace it
Yes.Yes.
To replace the catalytic converter on a 1999 Acura 3.2 TL, first, elevate the vehicle securely and remove the undercarriage shield if applicable. Disconnect the oxygen sensors and exhaust pipes from the old catalytic converter, which is typically held in place by bolts or clamps. Remove the old converter and install the new one, ensuring proper alignment and reattaching the oxygen sensors. Finally, check for leaks and secure all connections before lowering the vehicle.
Crawl under the vehicle and look between the engine and the tail pipe. You will see the catalytic converter.
You cannot unclog a converter. If it is clogged it much be replaced.
A shop can cut the bad converter out and weld a new one in.