After doing a basic brake job yesterday on the truck at 73,000 miles, I got a code for the cats being bad. I had the code cleared today and then it came back on about 30min. later. It just feels odd to have the cats go out at 73,000 miles. I guess it gives me a good reason to go with the supermaxx headers now, but I can't afford it at the moment. However, I have about 10 months before the inspection has to be redone.

 

id say its the 02s not the cat id imagine one of the rear 02s went out...they send the code

 

That's what I was thinking, that a rear O2(s) is/are bad.

If not, then it's possible that your cats are bad just unlikely as the vehicle is so new. Isn't there some type of emission warranty on the vehicle?

 

I know how you feel. My Formula only has about 15k miles on it, and I got the SES light the other week. When I looked up the code, found out one of the cats was bad. I thought the vehicle is usually warrantied to somewhere around 75k miles on problems like that.

 

if ya got a cat code, ya need cats. . your cats are under warranty for 8/80 man . see da dealer free stuff time.

 

What code(s) did you get?

I just scanned mine and got a "PO420, Bank 1"...Is this the crappy Whipple Computer for my Supercharger causing this? Or do I really have bad o2 / cat?

Thanks,

Matt

 

I killed a set of cats a while back when I used large amounts of nitrous. I was running a lil rich...that may have caused them to take a poo.