Can it be fixed?
It could be the heat shield which is external which can be repaired or the catalyst inside the converter may have broken, which means that it must be replaced.
if the converter is rattlin then it needs to be replaced because the element inside is broken. if the jeep still does not run try removing the catalytic converter to see if the restriction is too much. should start if the converter is restricted. if it doesnt maybe its whatever caused the converter to go bad in the first place
SOURCE: do I need a catalytic converter
Yes but there could be other causes. A sticky fuel injector, bad fuel pump etc. Other signs of a bad catalytic converter are a smelly sulphur exhaust, a very hot exhaust throwing heat from the middle of the car. Unless there's a lot of miles on your car, I'd be surprised if it were a bad Cat. Hope this answers your question. Best of luck.
Greg
SOURCE: my subaru forester has a rattle in the catalytic
I bet its just a the heat shield on the catalytic converter. Subaru uses very thin metal and the heat shield is bolted as opposed to welded together. This rattle is extremely common on subys.
mrmopar is right that you should replace it.
however there is a quick fix that will stop the noise. Go pick up a 6" stainless steel hose clamp at the hardware store. put the hose clamp around the cat. It should be obvious whats loose when you look under the car.
if you are a little handy its not a hard job to do your self. Just 4 bolts. You can get a catalytic converter for $200 online. Get the gaskets too. shouldn't take more than an hour or two.
You will need to put the car on jack stands or rhino ramps to get access. Once you are under the car, the parts are easy to get to.
Always, always chock the tires when your under the car. You do not want a car to fall on you.
SOURCE: I have a 2001 Jaguar S Type 3.0l that had a P0430
PO430 = Catalyst System Efficiency Below Threshold (Bank 2) You may still have a sensor fault in the combustion/injection system, You need to get this checked at a garage with the correct monitoring system for while the engine is running. Or take a gamble and change sensors. Hope this helps - good luck.
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