CA emissions headache - new cat

Okie81 · 2019-01-31T14:37:46+00:00

Hi all, thought I'd share my experience with getting a new catalytic converter for my 2003 4Runner. Hopefully this may help someone so that they won't have to deal with the mess I did. Bank 1, Sensor 1; went to the dealership and they confirmed the cat was bad. The quote was $1400 to replace (w/labor)...yeah right. I went on the CA emissions website (Aftermarket Catalytic Converter Database) and found the correct cat for my test group (3TYXT04.0FFP). Summit had it available (part #APH-741149) but said they COULD NOT ship it to CA. Ridiculous right? I reached out to them and they are in the process of updating the listing so that it can ship to CA (well duh, most of their sales are going to be from CA addresses). Sorry if this sounds like a rant, but our 4th gens aren't getting any younger and many cats are starting to fail. Hope this info might be helpful to others.

Thread starter Okie81
Start date Jan 31, 2019

Okie81

New member

May 29, 2019

ZiaMan said:
Swap both sensor 2s with each and see if the code follows the sensor. Also see if you can look at cross counts and do some research on what is normal. Been a long time since I looked into o2s but that is where I would start.

Excellent idea. When I tried to swap them through, the wires are two different lengths; one won’t reach. Guess that’s why there’s two part numbers.