LX470 Catalytic Converter (9 Viewers)

[Goose17]

Nicely done.
How many miles driven since reinstall?

 

[augustwest]

Great to hear this worked for you! I couldn't pass CO emissions last year and this was the last resort before going with new cats. Thankfully it worked. I do have P0430 showing back up now, but I suspect it's from bad gaskets on the passenger side. I screwed up my order and haven't gotten back around to popping the new ones in yet.

 

[zipdoa]

I'm waiting for replacement Bank 2 Sensor 1 (Denso 234-9051) o2 sensor to arrive. I'm running a cheap amazon sensor at the moment, and bank 2 fuel trims are higer than bank 1. I'm gonna chalk this up to being a cheap sensor, and it should even out once I install the Denso unit this week.

I'm about 300 miles in - very satisfied so far:

 

[2001LC]

I'm waiting for replacement Bank 2 Sensor 1 (Denso 234-9051) o2 sensor to arrive. I'm running a cheap amazon sensor at the moment, and bank 2 fuel trims are higer than bank 1. I'm gonna chalk this up to being a cheap sensor, and it should even out once I install the Denso unit this week.

I'm about 300 miles in - very satisfied so far:

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I don't recall. Did you find and correct the cause, CAT failed (clogged)?

 

[zipdoa]

I don't recall. Did you find and correct the cause, CAT failed (clogged)?

Bad MAF, 20 year old o2 sensors, oil overfilled.

I’m impressed that after years of being poisoned they can still be regen’d.

 

[2001LC]

Bad MAF, 20 year old o2 sensors, oil overfilled.

I’m impressed that after years of being poisoned they can still be regen’d.

Bad MAF, is the one I see kill most CATS. Which, typically those CATs, burn up.

 

[zipdoa]

Bad MAF, is the one I see kill most CATS. Which, typically those CATs, burn up.

Indeed, prior to replacing MAF/o2’s etc I noticed the exhaust on the truck was very hot. It melted the trailer brake light on my mototote rack.

We’ll see what happens long term, but I’ve never seen my truck pass any of the catalyst efficiency monitors in the past 6 years.

 

[2001LC]

They burn, due to fuel (gas/oil) igniting.

 

[zipdoa]

yeah look much worse off than mine, however if the bulk of that honeycomb is solid, I’d still give it a wash.