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02 Sequoia Oxygen Sensor Location?

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Old 12-15-2007, 12:04 PM   #1
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02 Sequoia Oxygen Sensor Location?

Hello. I am new here and pretty new to Toyota also. I have a 2002 Sequoia that has a bad O2 sensor. It is sensor 1 in bank 1. My question is where is cylinder 1 drivers side or passengers? I do know it is the sensor before the cat just not sure which side. Any help would be greatly appreciated.
Johan
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Old 12-15-2007, 12:07 PM   #2
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It should be the very first sensor in the exhaust system pre-cat. I dont know sequoia's well but i dont amagine theres more than 2 or 3 sensors in the exhaust. One EGR most likely, two o2's on pre one post cat. Bank 1 sensor 1 is the pre cat 02
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Old 12-15-2007, 12:08 PM   #3
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Does your car run kinda funny? cause the first 02 sensor is for a/f mixture
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Old 12-15-2007, 12:17 PM   #4
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Nope she runs perfect just the CEL is on. Brought it to Autozone and they said it is the O2 sensor precat but there are 2 of them on the 4.7. So it states it is the one closest to cylinder 1. That is where I need help which side is cylinder 1 on. Thanks
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Old 12-15-2007, 12:19 PM   #5
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not sure what side cyl. 1 is on. Do you know where the 02 sensors both are. one is pre cat so its that sensor dont worry about closest to cly 1 cause the post cat on cant be closer if you know what i mean
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Old 12-15-2007, 12:22 PM   #6
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not sure what side cyl. 1 is on. Do you know where the 02 sensors both are. one is pre cat so its that sensor dont worry about closest to cly 1 cause the post cat on cant be closer if you know what i mean
The problem is there are 2 O2 sensors pre cat on the 4.7. One on the right side and one on the left side. I need to find cylinder 1 so I replace the correct sensor.
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Old 12-15-2007, 12:43 PM   #7
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ok i see. Sorry i dont know the one you need
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02, 2002, 4runner, bank, change, changing, location, o2, oxygen, replacement, sensor, seqouia, sequoia, sequoiaoxygensensor, toyota

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