CATALYTIC CONVERTER DIY
09-25-2017, 01:01 PM
#5
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DOES IT EVER STOP?????
So, I get a call from the shop today telling me they installed the o2 sensor and that the left cat is not performing and it needs to be replaced. (2300) as cats are not covered under warranty. Is there a source for this that doesn't cost an arm and a leg. As I have been made aware. I will have to replace the cat and header. Any help would be greatly appreciated. Thanks... 
09-25-2017, 01:11 PM
#6
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Just go to a custom exhaust shop have them cut out the faulty OEM CAT then put in a
for a fraction of the cost. Worth a try
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09-25-2017, 01:57 PM
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09-25-2017, 03:14 PM
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Just go to a custom exhaust shop have them cut out the faulty OEM CAT then put in a Vibrant CAT like this one for a fraction of the cost. Worth a try
09-25-2017, 04:52 PM
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[QUOTE=DC911S;14497285]Read this.....
https://www.epa.gov/air-pollution-tr...nd-air-quality
make Porsche replace it. It should be covered if the Cat went bad.[/QUOTE It's my understanding that it won't be covered if an underlying issue caused the failure. Tell tale signs include but, not limited to: blueish outer shell, if it has soot, if it smells like gas etc... also, o2 sensor failures. Basically it just had to be a lemon cat.
https://www.epa.gov/air-pollution-tr...nd-air-quality
make Porsche replace it. It should be covered if the Cat went bad.[/QUOTE It's my understanding that it won't be covered if an underlying issue caused the failure. Tell tale signs include but, not limited to: blueish outer shell, if it has soot, if it smells like gas etc... also, o2 sensor failures. Basically it just had to be a lemon cat.
09-25-2017, 05:42 PM
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[QUOTE=STEVEW3765;14497388]
All of those are warranty items. Is your car in warranty? If so, I don't understand why the dealer is yanking you around.
Did you do something like not follow the maintenance schedule or install a turbo kit? If not, you should be good to go. If you did then you are on your own.
Read this.....
https://www.epa.gov/air-pollution-tr...nd-air-quality
make Porsche replace it. It should be covered if the Cat went bad.[/QUOTE It's my understanding that it won't be covered if an underlying issue caused the failure. Tell tale signs include but, not limited to: blueish outer shell, if it has soot, if it smells like gas etc... also, o2 sensor failures. Basically it just had to be a lemon cat.
https://www.epa.gov/air-pollution-tr...nd-air-quality
make Porsche replace it. It should be covered if the Cat went bad.[/QUOTE It's my understanding that it won't be covered if an underlying issue caused the failure. Tell tale signs include but, not limited to: blueish outer shell, if it has soot, if it smells like gas etc... also, o2 sensor failures. Basically it just had to be a lemon cat.
Did you do something like not follow the maintenance schedule or install a turbo kit? If not, you should be good to go. If you did then you are on your own.
09-25-2017, 09:58 PM
#13
If the cat is not performing correctly it will throw a ck engine light with a cat inefficiency code I believe it’s a p0420 for one bank and a p0422 for the opposite bank. I know p0420 is correct the other is either 421 or 422. It should not effect the running of the engine unless it become plugged which is uncommon on lower mileage vehicles. Hope that helps...
09-26-2017, 12:13 AM
#14
Check your local laws before you spend on a new cat. Here in Cali, there are no approved aftermarket cats for our cars, so OEM is the only option. Of course, we have the strictest emission laws so your state might be more forgiving on the wallet.
09-26-2017, 01:26 AM
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To address the last two comments. First one . It's my understanding that if the cat underperforms(gets very hot) then the innards can begin to deteriorate strewing debris inside the engine and what have you. Of. Parse this is not supposed to happen before a cel comes on first. I'd hate to take a chance on that. The tech did say the left cat was failing the efficiency test and getting very hot before they replaced the o2 sensor which they feel is the culprit for all described above.