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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

O2 sensor removal help

  • Thread starter Thread starter alchemist
  • Start date Start date Nov 24, 2019
A

alchemist

New Member
Jul 14, 2019
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1
north carolina
Nov 24, 2019
#1
  • Nov 24, 2019
  • #1
Any hints for removing the O2 sensor on the right (passenger) side? The O2's bolt shoulder is almost touching the transmission case. I don't have an o2 tool, but I do have a nice crowsfoot flare socket that works fine most of the time. Surely you don't have to remove the right side exhaust manifold?

Thanks,
RT
 
D

Deleted member 215073

Nov 24, 2019
#2
  • Nov 24, 2019
  • #2
Automatic transmission? Is it rusted badly? I've usually just used a quality open end wrench and worked it loose while spraying it with penetrating oil.
 
A

alchemist

New Member
Jul 14, 2019
19
0
1
north carolina
Nov 24, 2019
#3
  • Nov 24, 2019
  • #3
Yes sir. Automatic transmission. The bung on the passenger side is right up close to the transmission bell housing where it flares out. No way you’re getting an open end wrench in there. I really can’t get my crowfoot socket even on the thing.
 

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D

Deleted member 215073

Nov 24, 2019
#4
  • Nov 24, 2019
  • #4
Drop the H pipe down to gain clearance? I don't know what they look like underneath with an auto so I may be of no help.
 
Reactions: alchemist
A

alchemist

New Member
Jul 14, 2019
19
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1
north carolina
Nov 25, 2019
#5
  • Nov 25, 2019
  • #5
You’re on to something JM Glasgow. That looks to be the easiest option - removing H pipe and swinging the right side out away from transmission case. Removing the manifold from the engine would be a biotch, esp on passenger side!

Truly, you can’t even get a wrench around the o2 sensor’s bolt with how close it is to the transmission case.
 

Potomus Pete

I'm still waiting for the fully nude shots
5 Year Member
Mar 7, 2019
3,308
1,223
153
Sarasota Florida
Nov 25, 2019
#6
  • Nov 25, 2019
  • #6
Dont forget to tell us if it comes out . Thats the next issue . And if it makes a difference . Mine is 30 yrs. and Im thinking about a new one .
 
A

alchemist

New Member
Jul 14, 2019
19
0
1
north carolina
Nov 25, 2019
#7
  • Nov 25, 2019
  • #7
Sure will. I’m not worried about how tight the sensor is in there - just need to get a socket or wrench around the base!
 

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
3,427
1,518
194
Maryland
Nov 25, 2019
#8
  • Nov 25, 2019
  • #8
My original O2's were frozen. I had to destroy them in order to get a 6 point box wrench on to get them off.
 
F

fox racer v2

Active Member
Jun 2, 2019
109
57
38
Brooklyn
Nov 26, 2019
#9
  • Nov 26, 2019
  • #9
Assuming you'll be replacing them, chop the wire and slip a wrench over it. If it's still not enough clearance you have about an inch of o2 sensor body you can destroy before you hit the 6 point.

I have the stock hpipe (or at least, stock style replacement) and was able to swap the o2 sensors with the AOD in there. That said, when I swapped the AOD for a t5 I dropped the hpipe with the o2s in it.

If you're in a bind no need to be pretty
 
M

Monsterbishi

Member
Jan 17, 2006
107
3
18
Christchurch, New Zealand
Nov 30, 2019
#10
  • Nov 30, 2019
  • #10
Just get a o2 sensor socket and be done with it, no chopping, plus mine are made from impact friendly material so they don't mind being abused when trying to get a rusted sensor out.
 
A

alchemist

New Member
Jul 14, 2019
19
0
1
north carolina
Nov 30, 2019
#11
  • Nov 30, 2019
  • #11
On my passenger side, you can’t get the O2 socket around base of sensor, because of the transmission bell housing. The housing is literally about 1mm away from the o2 sensor base. So no way you’re getting a socket on it. Best idea do far looks like disconnect h-pipe and swing exhaust over a little.
 
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