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Old 04-17-2004, 04:28 AM   #1
JikJak
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Member#: 38225
Join Date: Jun 2003
Chapter/Region: VIC
Vehicle:
749 04STI 06CLS55
RangeRoverSport s/c

Default 02 sensor help please

does any one have any tips on taking the 02 sensor out of the downpipe? the sensor seems to be stuck (seized) and it wont come out. seems that if i force it out the threads may tear or the sensor may get damaged.

if its not possible to get it out then how much would a new one cost?
i guess the only place to buy one is from the dealer?
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Old 04-17-2004, 04:53 AM   #2
Happy_Days
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Member#: 35049
Join Date: Apr 2003
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
2011 Mercedes C63
OE Tune 538/500

Default

Try using wd40 or other bolt loseners. (spray and let it sit for a few mins)

Besides trying with an adjustible wrench, you can actually purchase a socket wrench for the 02 sensor, just to be safe.

You definately don't want to strip the threads on it, and when you successfully get it off.. be sure to pre-twist the O2 sensor cable counterclockwise so it doesn't stay twisted up from being re-tightened back on your downpipe.

You have my number if you need help.
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Old 04-17-2004, 05:17 AM   #3
aawen
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Member#: 27167
Join Date: Oct 2002
Chapter/Region: VIC
Location: 604
Vehicle:
09 Impreza
SWP

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You can get it from Subaruparts.com
It's 114.26 us +shipping.
I believe dealer here selling around 270 cdn
Last time called dealer and asked about o2 sensor for uppipe, around 240+tax
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Old 04-17-2004, 12:22 PM   #4
Avenger
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Join Date: Apr 2000
Location: Vancouver, Canada
Vehicle:
2000

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Do not use WD40 or any other lub that is not sensor safe on the 02 sensor unless you are not going to reuse the sensor. WD40 can harm the o2 sensor. Use a o2 sensor socket to remove it.
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Old 04-17-2004, 12:34 PM   #5
Happy_Days
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Join Date: Apr 2003
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
2011 Mercedes C63
OE Tune 538/500

Default

Quote:
Originally posted by Avenger
Do not use WD40 or any other lub that is not sensor safe on the 02 sensor unless you are not going to reuse the sensor. WD40 can harm the o2 sensor. Use a o2 sensor socket to remove it.

I disagree, it's harmless and when you spray it, the sensor is actually still inside the downpipe.

This isn't like the gunk from k&n filters getting stuck on the maf.
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Old 04-17-2004, 06:26 PM   #6
Avenger
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Location: Vancouver, Canada
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2000

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Quote:
Originally posted by Happy_Days
I disagree, it's harmless and when you spray it, the sensor is actually still inside the downpipe.
When you spray it on the sensor and when it is removed some of it can get onto the sensor tip. Plus WD40 have silicon in it and it floats in the air. The o2 sensor takes reading at the tip and the outside of the sensor to compair the oxygen content. The amount of oxygen different is equal to the voltage output. Silicon will affect the o2 output.
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