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  #1  
Old 05-12-2009, 01:01 AM
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This is why I don't like gas cars. (my Subaru XT)



This is my 1986 Subaru XT's original oxygen sensor that used to be 22mm before I tried replacing it. I had bought one of those oxygen sensor sockets that are 22mm with a few mm slice in them for the oxygen sensor wire in an effort to replace it.

After soaking the oxygen sensor in PB blaster for a long time, I tried to remove the sensor with that socket and a breaker bar, the socket flexed at the slice and rounded the oxygen sensor bolt. I kept trying, it rounded more. I think what I should have done in the first place was use a cut off wheel on half of the sensor and use a regular impact socket, after applying a torch to the area and soaking the threads in PB blaster. That's what I think I'll try next... even if I have to JB weld the socket on there.

The XT does run fine with the sensor disconnected, the sensor was failing anyway. The amount of sensors in this thing, the primitive ECU, diagnosing things, all a pain compared to my MB. The 80's ECU will flash a LED and you replace whatever is throwing that code.

Anyway, anybody have a better idea on how I can get this bungled oxygen sensor out?

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  #2  
Old 05-12-2009, 01:03 AM
Ara T.'s Avatar
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Vice grips?
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1985 CA 300D Turbo , 213K mi
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  #3  
Old 05-12-2009, 01:12 AM
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ViseGrips come to mind here, too.

Next time: If it’s bad. Cut the wires.
1/2 inch drive 6 point deep well. Grind two flats on the socket for an open end and tap that with a ball-peen hammer.

-Darby
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  #4  
Old 05-12-2009, 01:15 AM
iwrock's Avatar
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x3 on ViceGrips.



That, or get another hole drilled, have it tapped, and install new o2 sensor
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  #5  
Old 05-12-2009, 01:29 AM
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Dieselsüchtiger
 
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Quote:
Originally Posted by Ara T. View Post
Vice grips?
I thought "vice grips" as soon as I saw the pic....then I scrolled down.

Vice grips are a magical tool!!
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  #6  
Old 05-12-2009, 01:40 AM
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My old worn vice grips from the 70's didn't do much good when I tried them on that bolt, then I tried big pliers, no go either, the oxygen sensor is basically welded in there by rust. It's going to take a lot of torching, PB blaster, cursing to remove that sensor. I'll have to go pick up a new pair of vice grips, and not from Harbor freight, where I got that socket...
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  #7  
Old 05-12-2009, 02:08 AM
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Use a 22mm closed end wrench and another larger one to use a leverage to turn it. It will come out. You can also blast the thread area with liquid CO2, or another cold product stored at room temp as a liquid.
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  #8  
Old 05-12-2009, 02:31 AM
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That thing has a carb on it right?
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  #9  
Old 05-12-2009, 02:51 AM
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They're EFI afaik. Sweet looking cars!
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  #10  
Old 05-12-2009, 03:27 AM
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You would think they'd make a pair of vice grips with loooong handles so you can get easily have more leverage... anyone know of such a thing?
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  #11  
Old 05-12-2009, 07:23 AM
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You should remove the sensor when it is hot. Run the car, or put a torch to it. Always works for me.
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  #12  
Old 05-12-2009, 08:30 AM
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ditto on using a torch on the surrounding manifold, The heat will cause the exhaust manifold to expand a bit and will help you be able to remove the sensor .

Last edited by veggihatetank; 05-12-2009 at 10:49 AM.
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  #13  
Old 05-12-2009, 09:01 AM
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Dieselsüchtiger
 
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Quote:
Originally Posted by derburger View Post
My old worn vice grips from the 70's didn't do much good when I tried them on that bolt, then I tried big pliers, no go either, the oxygen sensor is basically welded in there by rust. It's going to take a lot of torching, PB blaster, cursing to remove that sensor. I'll have to go pick up a new pair of vice grips, and not from Harbor freight, where I got that socket...
Perhaps its time to support those USA workers and go pickup a brand new shiny pair of vice grips! They're only like $15 for the genuine ones from Irwin....
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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 83k - mine - (OC-85,500)
'17 Metris(VITO!) - 13k - wifes (OC-17k)
'01 E320 Wagon - 159k - mine (OC-160,000)
'01 E320 - 179k - dad's (OC-182,500)
'07 E350 Wagon - 131k - dad's (OC-132,500)
'01 SL500 - 51k - dad's (OC-52,000)
'16 E400 4matic Sedan - 57k - Brothers (OC-64,000)
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  #14  
Old 05-12-2009, 09:11 AM
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Maybe you'd like the OM606 better when removing Glow Plugs?

IF all else fails, can you weld a bar onto it so you have more leverage? That or drill it out and doing a helicore on the threads?
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  #15  
Old 05-12-2009, 10:31 AM
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VISE GRIPS! Ron Jeremy has a "vice" grip!

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