C4 Failure! Where to look next?

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Jun 8, 2010 | 09:32 PM

#21

Pwnage1337

Tech Contributor

Joined: Oct 2008

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From: Custer, WI

Quote:

Originally Posted by tjb101084

That was my guess to. The shop said it would cost $300 a cat. OUCH!

Gut em and forget about them unless you have smog.

Jun 8, 2010 | 09:39 PM

#22

tjb101084

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Quote:

Originally Posted by Pwnage1337

Gut em and forget about them unless you have smog.

Yea I wish. Have to pass smog in the deserts of AZ

Jun 8, 2010 | 10:13 PM

#23

tjb101084

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I think i will replace the cats as well as the egr this weekend and next weekend replace the rad and water pump.

Jun 9, 2010 | 07:40 AM

#24

c-4 lhozwalte

Racer

Joined: May 2009

Posts: 421

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From: van buren ar

you could try to unbolt the cats and see if the problem goes away and visually inspect them for broken catalyst.also sometimes when cats get clogged it will cause the manifolds to glow when held at higher rpms.you could try that when it gets dark outside.

Jun 9, 2010 | 01:26 PM

#25

bill mcdonald

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Joined: Oct 1999

Posts: 6,366

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Quote:

Originally Posted by c-4 lhozwalte

Do this.

also you can buy the pipes with pre cats in them. I think it is 350 for the front Y.
and then a new main cat. like 150ish.

I would not allow a shop to hack on it. My car was gutted when I got it. The dealer (mom and pops) had cats welded on and it had been a headache till I got rid of it.

http://www.mamotorworks.com/corvette-3-36-970.html

http://www.mamotorworks.com/corvette-3-36-9435.html

Last edited by bill mcdonald; Jun 9, 2010 at 01:32 PM.

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