OBX header for n/a question

[NA87SUPRA]

Ok, to make a long story short I have an 87 n/a supra that I installed an OBX header on, went to plug my O2 sensor in, and it would fit due to the diameter of the sensor (it wouldn't fit in the hole on the collector), plus, the collector's flange was tapped wrong and the holes were offset, solution: i had a block off plate on there for a while which was fine but then my car ran too rich and shut off at idle. So i went out to find an O2 sensor that would fit, the 89 fit with little modifiaction to the flange so that bolts could go through. Installed it on my supra yesterday, and now the car starts and then immerdiately runs to rich and shuts off. Is there that much of a difference where an O2 sensor for an 89 will tell my computer that I'm running too rich and shut me off? Will I have to somehow use an 87 oxygen sensor? Also, anyone who has an OBX header, let me know what your solution to not being able to fit your O2 sensor was?
Thanks.

 

[JesseH]

Ok, to make a long story short I have an 87 n/a supra that I installed an OBX header on, went to plug my O2 sensor in, and it would fit due to the diameter of the sensor (it wouldn't fit in the hole on the collector), plus, the collector's flange was tapped wrong and the holes were offset, solution: i had a block off plate on there for a while which was fine but then my car ran too rich and shut off at idle. So i went out to find an O2 sensor that would fit, the 89 fit with little modifiaction to the flange so that bolts could go through. Installed it on my supra yesterday, and now the car starts and then immerdiately runs to rich and shuts off. Is there that much of a difference where an O2 sensor for an 89 will tell my computer that I'm running too rich and shut me off? Will I have to somehow use an 87 oxygen sensor? Also, anyone who has an OBX header, let me know what your solution to not being able to fit your O2 sensor was?
Thanks.

I had the exact same problem, I still used my 87 O2 sensor somehow, it took me awhile to get it in there but i eventually did but I dont rember how I did it due to it being about a year since I put them on. Maybe someone else will chime in

 

[kewlcoconut]

your car is NA right? and you say that you bought an 89 O2 sensor. make sure the sensor that you bought is only 1 wire. maybe you purchased a turbo sensor, which is 3 wires.

 

[NA87SUPRA]

No it was an 89 n/a 1-wire O2 sensor that I purchased, bc its diameter is smaller than the 87 and it fit inside the tube that stuck out of the collector. Thanks though. Anyone else, that has the OBX, that might remember what they did?

 

[mcpcola]

take the car to a good exhuast shop not a mufflers are us but someone who can weld and get the Bung replaced with the correct size problem fixed should not cost more than 45 bucks and its done right.

 

[NA87SUPRA]

I found out that an 89 O2 sensor doesnt matter they all use the same amount of voltage. I'm an automotive student and my instructors said that I either have an exhaust leak (not likely because I just restored the car completely, and there are all new gaskets) or I have a bad EGR valve. It's not vacuum related because my vacuum lines are all connected.

 

[supra90turbo]