Cheap potential P0420 P0430 Catalyic Converter Efficiency Fix

[jcruiser70]

Awesome! Glad to hear!

 

[T4R03]

I’m in the same boat. P0430, p0420, al thought as I continue to drive it more and more without fixing it more codes pop up for air/fuel ratio sensors and 02 sensors. Think I’m going to start with replacing the gaskets. Just to be clear these are the gaskets coming from the air/fuel cats coming into a union?

 

[T4R03]

I’m in the same boat. P0430, p0420, al thought as I continue to drive it more and more without fixing it more codes pop up for air/fuel ratio sensors and 02 sensors. Think I’m going to start with replacing the gaskets. Just to be clear these are the gaskets coming from the air/fuel cats coming into a union?

Never mind. I see which ones you took a picture of. Would you recommend replacing the third one going into the Y? I have 3 flanges like that and well they all look like they need replacing. Especially being from Chicago the whole exhaust system looks like crap lol

 

[lumberjack_76]

This is great! I need to try this as I have both of those codes with a check engine light on in my 2003 4runner. The Dealership told me I needed new cats but to cost me at least $2000 from the dealership to put them on, I'm looking at replacing them myself.

 

[Warwicke36]

This is great! I need to try this as I have both of those codes with a check engine light on in my 2003 4runner. The Dealership told me I needed new cats but to cost me at least $2000 from the dealership to put them on, I'm looking at replacing them myself.

Definitely try the gaskets first. They're cheap and you'll need them if you end up needing cat converters anyways.

 

[T4R03]

Definitely try the gaskets first. They're cheap and you'll need them if you end up needing cat converters anyways.

How’s the exhaust repair holding up?

 

[Warwicke36]

How’s the exhaust repair holding up?

Mint, no issues after 3k miles since the repair,