What is the easiest way to replace both sensors?Do I have to jack up the car & or take out the tire?
I'm ready to knock this stuff out asap
Thanks Guys

 

Do you have a GS300 with the inline 6 or a GS400 with a v8?

On a GS300 you can do 1 of the bank 2 sensors under the hood and the other one under the passenger side floorboard so you need to jack up the vehicle for that one and the wire runs under the passenger front carpet which is not as bad as it sounds.

 

After driving with the check engine light on for a few days I was told my O2 sensors needed replacing but when I got the cost of the replacement sensors I decided to look into the problem personally. I found the front sensor was loose and after tightening the sensor was fine - no more check engine indications. So, please verify both electrical and mechanical connections before replacing the O2 sensors.

 

 

 

Yes you do. It makes folding the carpet back easier.

 

One tip I would like to add on that o2 sensor under the passenger side floor. There is a rubber grommet in the floor and the OEM o2 sensor had excellent water protection as each of the four wires were protected very well. My Denso replacement was not like the original and there was a gap in the wiring as the grommet was just one large hole. Once I got the o2 sensor fully installed, I added some gasket maker in that grommet to protect against water entering the inside so you may want to do the same depending on how your grommet looks.

 

Thanks Guys
Who has managed to replace the one closest to the firewall?
I'm having a space issue there

 

This is very true. What I do is depin the new O2 Sensor and run the wires through the OEM grommet.

 

To remove the one closest to the firewall unplug the sensor, get a boxed end 19 mm wrench, slip the plug through the wrench opening to get a good grip on the O2 sensor to remove it.

 

I have changed both bank 2 o2 sensors. The o2 you are talking about I was able to change from under the hood. I removed the black plastic upper intake pipe, used a o2 sensor socket and about a foot and a half length 3/8" breaker bar and it came right out.

Are you using a o2 sensor socket?

 

Yes I'm now using the smaller one & I was able to get it off with that but alas
I was sent two sensors that plug into bank one
FML