HELP: O2 SENSOR LOCATION - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Speedy One · 08-30-2009, 12:23 PM

I'm installing some headers and the instuctions say to disconnect the o2 sensor from the main harness. My 68 & 69 GTO'S don't have 02 sensors. Can anyone help me with locating the 02 sensor. I guess I'm to old to know. know.

Speedy One

felixbed · 08-30-2009, 01:21 PM

There are two sensors on each side. One connection is under the car along the tranny, the other is up behind the block on each side. (Just follow that grey wrap wire coming up into the engine bay just below the manifold/cat connection. I'm looking into disconnect methods myself for my DT shorty headers.

Speedy One · 08-30-2009, 02:19 PM

Felixbed'

I found the sensors thx, I'm still trying to figure out how to unlug the ones mounted on the tranny. It looks like it has some type of plastic security type zip tie or something through the plug to keep a guy from unplugging it. I'm installing DT shorty's also. Let me know if you figure out thr security tie @ the tranny plugs.

Speedy One

felixbed · 08-30-2009, 02:42 PM

I think you have to squeeze together to slide it out. Those on the block what did/are you going to do with those?

Speedy One · 08-30-2009, 02:51 PM

Those come apart faily easy. There is a green plastic tie, just pull on the tab and it will come out then you can pull the plug apart. Still haven't got the ones on the tranny, I can't get the plastic tie out to unplug them, may have to cut it.

felixbed · 08-30-2009, 03:49 PM

thanksfor the tip. Won'T needle nose close up that clip on the lower sensors? I'm planning on Friday when I can have my son help me get the cat/manifold out. Should make for a nice sound and a bit more get up and go.

Speedy One · 08-30-2009, 05:30 PM

Got the sensors @ the tranny, the needle nose worked, a liitle akward though, the drivers side is harded to get to though. The 02 sensor on the block on the passanger side was a bugger, I think they installed it before the motor went in because the tab was facing the inside of the block, just had to pull on it very hard with my fingers, it came after the 10th try.

felixbed · 08-30-2009, 05:57 PM

Good luck with the rest of the install. I can't wait to get those headers in. Need to make sure that I have a whole day to work on it just incase of any set backs.

Mr_Draco · 08-30-2009, 09:46 PM

Just a question but why are you removing them from the main harness? You only need to disconnect them from exhaust.

Speedy One · 08-31-2009, 10:56 AM

Draco: It dosen't look like you can remove them from the exhaust it looks like the wires coming from the sensors mounted on the back of the block are pressed in. The other set you have to unplug at the tranny, they are threaded into the exhaust but if you don't disconnect the plug it would twist the wires while you tried to unthread them.

08-30-2009, 12:23 PM	#1
Speedy One Drives: 2010 Camaro SS/RS Join Date: Jul 2009 Location: Montana Posts: 42	HELP: O2 SENSOR LOCATION I'm installing some headers and the instuctions say to disconnect the o2 sensor from the main harness. My 68 & 69 GTO'S don't have 02 sensors. Can anyone help me with locating the 02 sensor. I guess I'm to old to know. know. Speedy One

08-30-2009, 01:21 PM	#2
felixbed Drives: 2010 victory red ss Join Date: Nov 2008 Location: new jersey Posts: 19	There are two sensors on each side. One connection is under the car along the tranny, the other is up behind the block on each side. (Just follow that grey wrap wire coming up into the engine bay just below the manifold/cat connection. I'm looking into disconnect methods myself for my DT shorty headers.

08-30-2009, 02:19 PM	#3
Speedy One Drives: 2010 Camaro SS/RS Join Date: Jul 2009 Location: Montana Posts: 42	Felixbed' I found the sensors thx, I'm still trying to figure out how to unlug the ones mounted on the tranny. It looks like it has some type of plastic security type zip tie or something through the plug to keep a guy from unplugging it. I'm installing DT shorty's also. Let me know if you figure out thr security tie @ the tranny plugs. Speedy One

08-30-2009, 02:42 PM	#4
felixbed Drives: 2010 victory red ss Join Date: Nov 2008 Location: new jersey Posts: 19	I think you have to squeeze together to slide it out. Those on the block what did/are you going to do with those?

08-30-2009, 02:51 PM	#5
Speedy One Drives: 2010 Camaro SS/RS Join Date: Jul 2009 Location: Montana Posts: 42	Those come apart faily easy. There is a green plastic tie, just pull on the tab and it will come out then you can pull the plug apart. Still haven't got the ones on the tranny, I can't get the plastic tie out to unplug them, may have to cut it.

08-30-2009, 03:49 PM	#6
felixbed Drives: 2010 victory red ss Join Date: Nov 2008 Location: new jersey Posts: 19	thanksfor the tip. Won'T needle nose close up that clip on the lower sensors? I'm planning on Friday when I can have my son help me get the cat/manifold out. Should make for a nice sound and a bit more get up and go.

08-30-2009, 05:30 PM	#7
Speedy One Drives: 2010 Camaro SS/RS Join Date: Jul 2009 Location: Montana Posts: 42	Got the sensors @ the tranny, the needle nose worked, a liitle akward though, the drivers side is harded to get to though. The 02 sensor on the block on the passanger side was a bugger, I think they installed it before the motor went in because the tab was facing the inside of the block, just had to pull on it very hard with my fingers, it came after the 10th try.

08-30-2009, 05:57 PM	#8
felixbed Drives: 2010 victory red ss Join Date: Nov 2008 Location: new jersey Posts: 19	Good luck with the rest of the install. I can't wait to get those headers in. Need to make sure that I have a whole day to work on it just incase of any set backs.

08-30-2009, 09:46 PM	#9
Mr_Draco Drives: 2SS/RS Join Date: Sep 2008 Location: Western North Carolina Posts: 7,365	Just a question but why are you removing them from the main harness? You only need to disconnect them from exhaust.

08-31-2009, 10:56 AM	#10
Speedy One Drives: 2010 Camaro SS/RS Join Date: Jul 2009 Location: Montana Posts: 42	Draco: It dosen't look like you can remove them from the exhaust it looks like the wires coming from the sensors mounted on the back of the block are pressed in. The other set you have to unplug at the tranny, they are threaded into the exhaust but if you don't disconnect the plug it would twist the wires while you tried to unthread them.