heated oxygen sensor tool
Thread Starter
7th Gear
Joined: May 2007
Posts: 7
Likes: 0
From: Antioch CA
heated oxygen sensor tool
The factory service manual says that special tool J39194-B is needed to remove a heated oxygen sensor. The tool looks like a line or flared wrench to me. Is there a generic tool available at Sears or anywhere else? Please be as specific as possible regarding which wrench to use.
The manual also says that it's difficult to remove the sensor unless it's warm, and that there is a danger of stripping the threads if excessive force is used. It says nothing about removing the heat shield, but a 'search' says that it may be necessary. Any advice as to step-by-step instructions would be appreciated.
I would really hate myself if I have to go to the shop for a H2OS replacement, as it looks so simple. I've had my car for some time now, and if I cannot manage to do a repair like this, then maybe it's time to go to a generation with a warranty and let a real diy'er take over. I know that I wouldn't feel the same about any other gen.
The manual also says that it's difficult to remove the sensor unless it's warm, and that there is a danger of stripping the threads if excessive force is used. It says nothing about removing the heat shield, but a 'search' says that it may be necessary. Any advice as to step-by-step instructions would be appreciated.
I would really hate myself if I have to go to the shop for a H2OS replacement, as it looks so simple. I've had my car for some time now, and if I cannot manage to do a repair like this, then maybe it's time to go to a generation with a warranty and let a real diy'er take over. I know that I wouldn't feel the same about any other gen.
I don't have any shield, so no comment there. 
Le Mans Master
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
If it has been on there a long time, it is helpful to attempt it warm, but a generic oxygen sensor socket works fine. They cost about $6 from your local parts store.
Le Mans Master
Joined: Oct 2004
Posts: 5,841
Likes: 19
From: CLT, North Carolina
There is a special 22mm oxygen sensor wrench made for LT1 cars which makes the job a lot easier. I'm sure you could get to it with other tools but the proper one makes it a lot easier to get a torque wrench on the new one if you are inclined to do that.
Last edited by Greg Gore; May 17, 2007 at 01:06 PM.
Burning Brakes
Joined: Oct 2002
Posts: 983
Likes: 1
From: Bergen County NJ
You need something like this item to get the passenger side sensor out easily http://www.toolsource.com/ost/produc...CKT886WF500439
Instructor
Joined: Apr 2005
Posts: 195
Likes: 1
From: Columbus OH
This tool looks nice. I have a 94 and the oil pan doesn't allow enough room to get a real wrench on it. I bought a stubby 7/8 and while I could it on the sensor I couldn't get enough leverage to loosen it. A set of crows foot wrenches with the 7/8 included for $15 at Autozone was the secret. I only changed the passenger side as there was a broken pin on that one. The driver side looked a little tougher as a heat shield looked to be in the way.
