![]() 11/07/2015 at 13:58 • Filed to: None | ![]() | ![]() |
...then Satan invented the rear O2 sensor placement on the 3.3 Gen 2 Sienna. It's impossible to access from above, but might just be accessible from underneath. I pulled the front O2 sensor and it's not that bad, and tightening up the gas cap had no effect. Wish me luck, as O2 sensors usually go around 150,000 miles on 3MZ-FE engines.
![]() 11/07/2015 at 14:08 |
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Did you use an 02 sensor wrench?
![]() 11/07/2015 at 14:13 |
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Yeah, why?
![]() 11/07/2015 at 14:14 |
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Just making sure, stripping 02 sensors is NOT fun in the slightest.
If you are certain the 02 sensors are bad, it’ll probably be $350~ USD just for the one. What codes did you pull?
![]() 11/07/2015 at 14:17 |
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Haven't pulled any yet (still waiting on a code reader), but I noticed it was smelling a little rich and had reduced pickup after the CEL illuminated. The same thing happened to our 1MZ-FE gen 1 when it blew the front O2 sensor, so I'm just working my way down the list of the usual suspects to keep me entertained.
![]() 11/07/2015 at 14:18 |
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What else are you going to check?
![]() 11/07/2015 at 14:22 |
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PCV system (just because I can), cat temps, and the evap canister.