You will have to replace it.
No, there is no repair if it it clogged. Replace it.
cant repair a Catalytic converter only replace at a muffler shop
You don't. They are replaced when damaged or defective
If a catalytic converter is indeed bad, it's far more cost-effective to replace it rather than try to repair it
I recommend you have this done by a qualified exhaust system repair shop. Make sure the catalytic converter is defective before you replace it, as they are very expensive.
Replacing a catalytic converter on a 99TL can be tricky, however it can be a fun project if you have the right tools. Make a check list, and include the cars repair manual if you have one available, and this will help you get everything in order to make the repair.
You can't repair it. It must be replaced.You can't repair it. It must be replaced.
How much it will cost to repair a catalytic converter in a 2005 Nissan will vary. Some factors that can influence price are the price of the part itself, and the price of the labor charged by your chosen mechanic. This could be anywhere from $100 to $800.
The "Haynes Repair Manual" says there is 2: 1 upstream of the Catalytic Converter, on the rear exhaust manifold. 1 downstream of the Catalytic Converter, on the Exhaust Pipe...
You repair a clogged catalytic converter by replacing it. A catalytic converter works by having unburned gasoline or some other substance touch a metallic catalyst such as platinum or rhodium. When the catalytic metal becomes covered over with garbage it stops working. When it stops converting the garbage to carbon dioxide and water, the small holes in it then become clogged. Then it will not let exhaust gasses pass though. No way exists to clean out a catalytic converter. They can only be taken apart and the substance used as raw material to create a new metallic catalyst. You can drive fast and blow the dirt off!
Fix any exhaust leaks, test/replace the oxygen sensors, replace the catalytic converter.
More than likely the heat shield is cracked or loose. Repair or tighten it.