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Old 07-01-2012, 10:06 PM   #1
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02 sensor

So I bought a 90 gt and Im having Idle problems and Ive checked the IAC and the TPS and everything is good. My mechanic said that because I dont have O2 sensors (even places in the exhaust to put them), that may be the issue. My problem is I dont even know where the connections are to put in O2 sensors... Any pictures or some guidance would be greatly appreciated.
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Old 07-02-2012, 02:22 AM   #2
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Re: 02 sensor

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Originally Posted by ItsjustaGT View Post
So I bought a 90 gt and Im having Idle problems and Ive checked the IAC and the TPS and everything is good. My mechanic said that because I dont have O2 sensors (even places in the exhaust to put them), that may be the issue. My problem is I dont even know where the connections are to put in O2 sensors... Any pictures or some guidance would be greatly appreciated.
Yes, the O2 sensors are necessary for the ECU to determine the proper air to fuel ratio.


Hopefully the wiring is still under the car somewhere.
Buy you a Chiltons manual that has the wiring diagrams so you can trace out the wiring, buy the sensors and bungs, weld the bungs into the piping at approximately the 2 O-clock position on the pipes, install and connect the sensors. You may be able to use the O2 sensor extender wiring to connect them. Look on American Muscle for the extenders.
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Old 07-04-2012, 02:37 PM   #3
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Thanks man. I got the car for a great price. It with a great price comes alot of work there are supposed to be two o2 sensors correct? I see quite a bit about WB and NB.
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Old 07-04-2012, 04:25 PM   #4
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CPU needs the input from those sensors to correct engine adjustments... Engine can get too rich/lean... Could go boom..
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Old 07-04-2012, 06:49 PM   #5
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Re: 02 sensor

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Thanks man. I got the car for a great price. It with a great price comes alot of work there are supposed to be two o2 sensors correct? I see quite a bit about WB and NB.
Yes there are two sensors.
What's WB & NB?
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Old 07-04-2012, 07:05 PM   #6
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Yes there are two sensors.
What's WB & NB?
Uh...wideband & narrow band maybe?..
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Old 07-04-2012, 07:11 PM   #7
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Uh...wideband & narrow band maybe?..
I think you are right my friend
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Old 07-04-2012, 07:47 PM   #8
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Re: 02 sensor

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Uh...wideband & narrow band maybe?..
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I think you are right my friend
He is I'm sure.
Brain is not working to well just yet.


Narrow Band is what would be on the car.
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