Hi, I have a 2004 ES300 (MCV30R) 3.0L and my mechanic believes that I have a faulty O2 sensor. He wants me to wait until a fault light displays, but I prefer not to wait for that. Can anyone tell me if this model is pre Cat Convertor or Post Cat. Do we need to change both the upstream and downstream sensors? Where is the best place to buy in Australia?
O2 Sensor
in Lexus ES300 / Lexus ES330 / Lexus ES350 / Toyota Windom Club
Posted
Hi, I have a 2004 ES300 (MCV30R) 3.0L and my mechanic believes that I have a faulty O2 sensor. He wants me to wait until a fault light displays, but I prefer not to wait for that. Can anyone tell me if this model is pre Cat Convertor or Post Cat. Do we need to change both the upstream and downstream sensors? Where is the best place to buy in Australia?
Would really appreciate you assistance.