if it is under warranty and the parts not labor are free from defects then it can be rewelded. if it is defective than a new exhaust will be installed by welding it in place
Catalytic converters are located up towards the front of the exhaust system - typically right after the pipe comes down off the engine's exhaust manifolds. If the vehicle has a single exhaust system, there will be a "Y-pipe" bringing the two exhaust manifold pipes together - the catalytic converter will be just past this. If the car has dual exhaust, there will be a catalytic converter for each.
It might be the catalytic converter has overheated and had the honeycomb inside melt together.
Depending on the year, make and model you can probably purchase a bolt in or a weld in cat.
Actually it probably wasn't customised. That is how they were made. The two sides go together right at the cat converter. There is a four bolt flange at the interface between the crossover pipes and the cat.
On my 1991 Ford Eplorer v6, both pipes coming off the exhaust manifold join together then behind that there seems to be two catalytic converters inline one after the other.
There IS an oxygen sensor BEFORE the catalytic converter and that's the one that typically needs to be replaced. Not all vehicles have a second oxygen sensor after the catalytic converter and of those that do, it almost requires physical damage to the vehicle to damage the rear sensor. The front oxygen sensor screws into the exhaust manifold, typically right where the exhaust comes together into a single pipe. It will be a screw in device that looks similar to a spark plug and it should have 2 or more wires out the top. If you crawl under the car and look you will know for sure.
An exhaust system is comprised of a catalytic converter, resonator, muffler and oxygen sensor. Each of these components work together to dissipate the gases created by the engine.
There are two converters on this vehical. They are connected to the y-pipes and come together at a common flange. They should be replaced as one unit. Unbolt the spring bolts at the exits of the exhaust manifolds, unbolt the common flange--3 nuts and bolts. Remove the Oxygen sensors. Install new gaskets and bolts
I think your catalytic converter is clogged cut it out and see if that makes it better if not clamp it back together.
Unplug and take out the oxygen sensor.Then undo the catalytic converter.Find something long and hard enough to bust up the honeycomb inside to gut it,and then your good.Put it together;but be carefull with the oxygen sensor not to damage in the process.
It is part of the exhaust system and looks much like a muffler. Like any part of that system, it is able to be unbolted from it's mounts and connecting pipes and replaced. However, like any part of a muffler system it is very commonly too rusted/worn/heated together for this to be practically done without damaging the pipes, etc it attaches to beyond repair, requiring more parts to be replaced,to get best quality.
All oxygen sensors are in effectively the same place. Check the exhaust manifold then notice where all of the pipes come together into the head-pipe. The O2 sensors should be right there. Look for the thing that screws into the exhaust and has some wires connected. If you have a 'V' configuration engine there will be 2 O2 sensors. Many vehicles also have an additional oxygen sensor AFTER the catalytic converter, which, as the description suggests, is AFTER the catalytic converter.