usman2338

Please make sure that if your car has AFR sensor (air fuel ratio) then you replace it with an AFR and if you have oxygen sensor then r,eplace it with oxygen sensor since signal detection circuitry inside the ECM looks for a specific voltage range for feedback signal. If the feedback signals are different then ECM will throw cel light and could also lead to damaging the ECM. Thanks

Steelfan

You should be able to get the leverage you need on it coming in from the top side, driver side. You'll have to lay on the motor to get the wrench/breaker bar on and should be able to stand on the side of the car and use your left arm/hand to push down to break it loose or strip it out. I did on mine but I stripped it out when I took it out. I have a 2000 ES300 as well.

I replaced both sensors at the same time and used the old one from the front manifold to re-tap the hole in the back. It has been working for 25k miles now.

I would take the car out for a nice long ride and get it up to full operating temp, put on some mechanic gloves and go to town. I wouldn't spray on the oil first though after you had it out for a ride. Might start a little fire that way.

Make sure you unplug it first so you don't wreck the connectors or harness.