thesodaguy

My RX330 2004 3.3 engine Japan built would not pass smog. showed catclytuc converters bad has 268,000 miles. Installed new ones on Radiator and firewall sides. Also three new sensors. Failed again showing radiator side bad ( primary). Replaced oxygen sensor again with Denso 234 4168. Checked again still showing cat bad. Is it possible that the new radiator side (primary) is bad? Unable to check myself physically unable to work on vehicles anymore disabled vet have taken it to two different Service Garages. Need help, only car we have, on a fix income any ideas

mdbrown

Make sure both sensors on the cat that is failing have been replaced, if not it's possible to get a false cat failure indication.