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oxygen sensor


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5 replies to this topic

#1 pamike

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Posted 27 August 2006 - 04:53 PM

is changing one on a 90 legacy a hard job. do they come out easy or are they stuck in there pretty good.

#2 johnceggleston

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Posted 27 August 2006 - 06:23 PM

first the exhaust has to be cold, not hot. spray ti wit hpenetrating oil and let it sit. unplug the wires, this was pretty hard on the rear one on my 97obw. the unscrewing isint bad if you soak it. just don't break it.

is changing one on a 90 legacy a hard job. do they come out easy or are they stuck in there pretty good.



#3 porcupine73

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Posted 27 August 2006 - 06:40 PM

Soak in good penetrating oil like kroil for a few days at least before attempting removal. I've had excellent results with exhaust/engine cold, then starting and running for maybe 30 seconds, just enough to warm the pipe, and then maybe running 30 more seconds if still tight, and then it comes right out. Couldn't budge it exhaust fully cold. Also depends on if it was replaced previously or not and if so whether good hi temp antisieze was used.

#4 Manarius

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Posted 27 August 2006 - 09:03 PM

90's have only one sensor. From the looks of the one on my 91, I bet I could get it off without any penetration solution. Just unplug it and do the nut, it's a rather simple process.

#5 Eljefe

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Posted 28 August 2006 - 12:07 PM

I just changed the O2 sensor on my 90 Wagon. Piece of cake, just drive the front end up on some ramps, You can get to it real easy.:D

#6 pamike

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Posted 28 August 2006 - 07:05 PM

thanks. i'll give it a try sometime.




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