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May 12, 2007 | 10:25 PM

ROLLN

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From: ILLINOIS

stupid question

#1 can a bad cat with a p0420 code make a ticking noise?
#2 if the front o2 sensors are not throwing a code, can they still be bad?
#3 if those front o2's are bad, but not throwing a code, can the cause the car to run rich?
#4 if the car is running rich can it cause minor misfires, and occasionally trip a p0300 random misfire code?

just trying to figure out some issues on my 02 camaro. thanks in advance for any help.

May 12, 2007 | 11:33 PM

2formulas

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From: San Diego, CA

I have that 0300 code and think it was tuned a little rich. from what I understand that code can be caused from probably anything and may be related to your o2 problem.

May 13, 2007 | 04:29 PM

ROLLN

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From: ILLINOIS

thats what i was thinking, but i was wondering if the front o2's could be bad but not throw a code.

May 13, 2007 | 04:43 PM

2001NBMZ28

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From: Jacksonville, FL

IMO if the front 02's aren't throwing a code, they're OK. Get the driver's side cat replaced free at the dealer if you're stock - maybe the "ticking" noise you're hearing is the cat coming apart on the inside? Sometimes they'll make a rattling noise too.

May 13, 2007 | 05:24 PM

iroc85blu

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From: grand rapids

only the front 02's have to due with how engine runs ( rich or lean ). The rear 02's only monitor catalytic convertor effiency.

May 13, 2007 | 06:54 PM

blownta00

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if the front o2s are bad, you will throw a code

May 13, 2007 | 06:58 PM

orangeapeel

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From: Justin, TX

I would replace the O2's in the front and either hollow the cat or replace it.

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May 13, 2007 | 08:45 PM

ROLLN

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From: ILLINOIS

well i am going to get the o2's tuned out next week so i can put the longtubes on, i am pretty sure the cat is screwed from spraying my dry kit on there last year. so hopefully this will correct my problem. it has a stupid miss at idle, and its really minor, but its really annoying. so i hope tuning the cats out and longtubes will correct the problem.

May 13, 2007 | 08:59 PM

#10

blownta00

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it should

May 13, 2007 | 10:03 PM

#11

98Camarod

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From: Summerville, SC

I'd do the lt install and get either an ory or duals and see where you are then. Do you have a custom tune or is it stock? Are you using the stock MAF sensor?

May 14, 2007 | 06:19 PM

#12

ROLLN

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From: ILLINOIS

yeah everything on the car is stock including the tune. i am wondering if a bad cat would make the car run rich. i think the cat is bad because it makes a funny tick noise.