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#1 Old 09-25-2010, 04:37 PM
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how to clean o2 sensor

I have an engine light because of my o2 sensor and dont have $120 to replace it.

So I just want to clean it up and see what happens so what can I use to clean it.

I have wd40 and I also have some denatured alcohol can I use any of these or what
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#2 Old 09-25-2010, 05:10 PM
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Quote:
Originally Posted by bis_1315m View Post
I have an engine light because of my o2 sensor and dont have $120 to replace it.

So I just want to clean it up and see what happens so what can I use to clean it.

I have wd40 and I also have some denatured alcohol can I use any of these or what

Non chlorinated carb cleaner I think would be better then wd-40 personally
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#3 Old 09-25-2010, 07:59 PM
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http://en.wikipedia.org/wiki/O2_sensor

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#4 Old 09-25-2010, 08:51 PM
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Brake cleaner/gas supposedly work.

Just to let you know, Ive never removed any o2 sensor without destroying it to a degree. You might just wanna save up the cash.
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#5 Old 09-25-2010, 09:12 PM
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Quote:
Originally Posted by carsrus View Post
Brake cleaner/gas supposedly work.

Just to let you know, Ive never removed any o2 sensor without destroying it to a degree. You might just wanna save up the cash.

heat....heat and the proper wrench are your friend here. You CAN do it with regular combo wrench......just takes a long damn time
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#6 Old 09-25-2010, 09:14 PM
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i used a bit of tri-flow, an industrial lubercant, and my senors came off really easily.


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#7 Old 09-25-2010, 10:10 PM
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I had good luck using PB Blaster and an o2 sensor socket set, which I picked up at Advance Auto. The PB Blaster just needs some time to do its job before you start trying to twist out the sensor.

Have you considered the Denso universal replacement o2 sensors? I replaced all three sensors in our '98 Sienna back last winter and the sensors were about $40 each from www.rockauto.com. Denso is the OEM brand for our van, which means all the sensor wiring color-coding was the same. This made for a very easy job of replacing the sensors. Not as easy as using the plug-and-play sensors, but heck, those cost a lot more! Try going to the Rock Auto site and enter your vehicle's description, then look under Emissions and see if there is a Denso universal sensor for your model. Since you're going to all the trouble of taking out the sensor, for $40 you can maybe get a brand new one to install in its place!
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#8 Old 09-25-2010, 10:46 PM
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I've always found zero problems in removing o2 sensors even on 124k mile old cars ... PB Blaster, wait 5 minutes and then use o2 socket (can borrow a set from autozone) with a 3/8'' ratchet or better a 3/8'' breaker bar or torque wrench (it's much bigger than ratchet). they come off like butter.

so, which sensor is bad that you need $120 ? upstream AFR sensor (calif specs) ? those are easiest to get to. find them (Denso) on ebay cheap, new OEM ones (no OE fit). Universal ones require splicing or using butt connectors to re-connect them to old plug. it's cheaper than OEM or OE fit though. (as posted above).

find your part number here:
http://www.densoaftermarket.com/catalog/

NTK/NGK equivalents are noticeably more expensive than Denso even when you get them on amazon.

stay away from Bosch OE equivalents, they cause only trouble and do not survive long.


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Last edited by fenixus; 09-25-2010 at 10:52 PM.
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