Can't get my O2's out!

SaltWaterFish

Founding Member

Jan 6, 2002

208

0

17

Cedar Rapids, IA

Jul 19, 2007

#1

• Jul 19, 2007

• #1

I'm trying to get the O2's out of my 90. They are rusted so bad it's like they are welded in.

I tried liquid wrench sitting on them over night. No luck. I then try to heat the O2 bung with a torch. The torch is just a small one used for copper pipe. I didn't get it red hot and still no luck.

Any ideas?

 

S

svtpower

New Member

Apr 30, 2005

257

0

0

Wisconsin

Jul 19, 2007

#2

• Jul 19, 2007

• #2

try

Either go to the hardware store and get a longer wrench or put a piece of pipe over the one you have and get some serious leverage on it.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Jul 19, 2007

#3

• Jul 19, 2007

• #3

If the H is off the car, flip it upside down and let PB run down the threads. Some will get in there and help.

Good luck.

 

9

90bluegt

Founding Member

Dec 9, 1999

592

0

16

Jul 19, 2007

#4

• Jul 19, 2007

• #4

Agreed PB blast and let it sit for a bit, then get a wrench on it (the hole side not the open end) lock another LARGE wrench on it. Brace yourself on the car or something that's not going to move and pull with everything you got.
Just don't hit yourself when it breaks loose..

Get a friend to help you out by pushing with you pulling if need be...

 

Fett

New Member

Nov 2, 2004

766

6

0

Jul 19, 2007

#5

• Jul 19, 2007

• #5

PB Blaster! If you can, find someone who has an o2 sensor wrench, those things are much better suited for removal than regular open face wrenches. If you feel real ambitious, take an old wrench and use a cutoff wheel to grind a slot in one of the angles to allow the o2 wires to slide through, that way the wrench will wrap around the sensor like a wrench would on a normal nut. That seems to help also.

New o2 sensors should have anti-seize on the threads, if not make sure you apply some so you don't run into this the next time.

 

5.0fox

Member

Feb 10, 2003

410

0

17

buckley/enumclaw wa

Jul 20, 2007

#6

• Jul 20, 2007

• #6

dont cut your wrenches! just unplug the wires and slip them through the boxed end!

 

Fett

New Member

Nov 2, 2004

766

6

0

Jul 20, 2007

#7

• Jul 20, 2007

• #7

5.0fox said:

dont cut your wrenches! just unplug the wires and slip them through the boxed end!

Click to expand...

Oh yea......good tip. I cut one of my wrenches a long time ago for R&R. I never even thought about the possibility that they would be thrown away and the wires could be cut.

That is why I always say to do it to an old wrench.

Thanks for correcting me though, that thought never even occurred to me.

 

Jaswir

Member

Mar 31, 2005

578

0

18

Orlando, FL

Jul 20, 2007

#8

• Jul 20, 2007

• #8

i had the same problem... so i took it to a muffler shop and they charged me 15 bucks to get them out... they heated it up untill it was glowing red and came right out...

 

Foxfan88

My Grandpa has great wood.

Sep 13, 2004

2,487

4

0

Miami, Ok

Jul 20, 2007

#9

• Jul 20, 2007

• #9

i had mine seized in so bad i ripped the threads of the sensor. the sensor came out but the threads were sill in the bung. i just ran a chaser in a bit and jammed the new one it, its crooked but its in there and i left it, if i have any more problems i will weld a new bung in

just get the thing RED HOT and it try it then. you may have to run a tap through the bung again to clean up and make new threads. getting hte bung red hot may warp it and you wont be able to get anything to thread back in. just run a tap through it for to fix it. worst case, you breake the 02, and have to cut the old bungout and weld in a new one, they sell new bungs pretty cheap!

 

B

BullittAndy

New Member

Nov 9, 2003

139

0

0

Jul 21, 2007

#10

• Jul 21, 2007

• #10

Try PB blaster again. Soak them every 30 minutes and let them sit for hours while occasionally banging on the side of the O2 nut.

PB blaster will break the rust free but it can only work on the rust it touches. All that rust acts as a dam to block the oil from getting to the lower threads.

 

C

C6AE

Member

Mar 22, 2004

145

1

17

Ma.

Jul 21, 2007

#11

• Jul 21, 2007

• #11

Mine broke when I tried to get it out

I drilled it and chased the thread. Now that I swap it out once a year (veh insp) I never have a prob

Plus It's sooooo much easier to get at the nuts that hold the H pipe to the header with the O2 sensors out

 

Nemesis2k4

New Member

Nov 1, 2006

15

0

0

Jul 21, 2007

#12

• Jul 21, 2007

• #12

i just put a big honkin wrench on it (the right size of course)and hit it with a hammer

 

mob

the guy who hits on his mom

20+ Year Stangneter

Oct 3, 2003

2,566

136

104

Dallas, TX

Jul 21, 2007

#13

• Jul 21, 2007

• #13

Do some push ups, and PB Blaster. Man up boy! Hit it with a hammer to keep breaking it loose. Try putting the front end on jacks for more room.