Hi guys/gals!
My gas milage is down to about 11mpg (from 17) and I got the following OBDII codes:
(All P) 0300, 0301, 0303, 0305, 0171, 0174, 1130, 1153
I'm hoping that by by replacing the two O2 sensors (based on 0171 and 0174) the other codes will be fixed. However, I'm not sure of the following:
1) Where are those two sensors located (I think I have 3 sensors total on this RX300)
2) Does anyone know the part numbers. I've heard the Highlander is the same engine, so I was thinking of trying to get them from the Toyota dealer near my home
3) Are they difficult to replace (as always pics, instrcutions would be apprciated).
I am also polanning on cleaning the MAF sensor, but I already have instructions on that.
Thanks in advance!