O2 sensor or catalytic converter?

[Damon831]

I have a bank 2 catalyst code show up a couple weeks ago and nobody can give me a good answer as to what to do besides throw psrts at it. Let me tell you these parts are not cheap! Anyone have a clue?

 

[Prime]

I would start with the O2 sensors. Downstream sensors aren't bad on amazon. Legit NGK ones can be had for $30-40. Start there.

 

[Damon831]

A little update on this. I ended up having to replace the o2 sensor, front cat and back cat. What a fricking nightmare!

 

[Muadeeb]

Thanks for the update! How bad were the cats?

 

[Damon831]

The front cat was a pain because it was the drivers side and the brake lines were in the way. Had to rig up a mount to keep the heat shield on the manifold. All three bolts broke off. The back cat was an easy task. I used my friend's lift in his garage so it made this repair a little easier.

 

[Muadeeb]

The front cat was a pain because it was the drivers side and the brake lines were in the way. Had to rig up a mount to keep the heat shield on the manifold. All three bolts broke off. The back cat was an easy task. I used my friend's lift in his garage so it made this repair a little easier.

I meant "how damaged were the cats", but this is good info too. My 2001 is still on the factory cats.

 

[Damon831]

My bad. My X is an '05. The front cat was completely broken apart. Clogged up the back one. I'm not sure if 1st gen is set up the same.

 

[Muadeeb]

Probably slightly different construction, but same basic principle. I'm just shocked at how a 13 year old vehicle is still running assembly line cats and others need them replaced after 5-7 years.

 

[Damon831]

This rig has cost me a butt ton of money! You better knock on wood.

 

[Prime]

I meant "how damaged were the cats", but this is good info too. My 2001 is still on the factory cats.

That amazes me. I could tell a significant difference in power when I replaced the factory exhaust. How many miles are you up to?

 

[Damon831]

107000

 

[Prime]

See that's about right. At 100k I could see replacing the cats. Mine were all cracked and leaking at that point.

 

[Muadeeb]

That amazes me. I could tell a significant difference in power when I replaced the factory exhaust. How many miles are you up to?

233, but my driver manifold is cracked to hell. Didn't notice the passenger side last time I sea foamed, but is probably toast too

Sent via wild ferrets on crack

 

[granitex]

The pre cats were the main reason that I went with the Thorleys, it was cheaper in the long run to do them instead of new cats. And it runs much batter now also.

 

[Muadeeb]

The pre cats were the main reason that I went with the Thorleys, it was cheaper in the long run to do them instead of new cats. And it runs much batter now also.

Tis the plan. Eventually.

Sent via wild ferrets on crack

 

[Prime]

The pre cats were the main reason that I went with the Thorleys, it was cheaper in the long run to do them instead of new cats. And it runs much batter now also.

Yeah. The DT headers were a great option as compared to replacing all the cats.