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O2 Sensor question.... Need help ASAP

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Old Mar 30, 2003 | 05:31 PM
  #1  
Vidman's Avatar
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From: NC
Car: '86 Iroc
Engine: 350 TPI
Transmission: T-5 with Pro-5.0
O2 Sensor question.... Need help ASAP

Hi guys.....

Well, my new motor is in with heddman headers and the guy welded an O2 fitting on the collector on the drivers side, but the wire is too short to reach. Can the wire be spliced, or would that be a bad idea on the O2 sensor?? Thanks in advance!!!!
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Old Mar 30, 2003 | 09:40 PM
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Splice away.
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Old Mar 30, 2003 | 09:53 PM
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I dont think you can splice the wire that is actualy connected to the oxygen sensor. You have to splice the part that is on the harness. I believe that the oxygen sensor uses the resistance of the wire attached to it for reference or something like that. Also, this way you wont have to do it everytime you have to replace the oxygen sensor.

Ben
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Old Mar 30, 2003 | 11:58 PM
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From: Chicago, Il
Car: 1987 Trans Am
Engine: Lt1
Transmission: T56
I think Momar is right on this one. Another way is to get an extension harness. Call your header manufacturer or try and do a search of the web to see if you can find one.
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Old Mar 31, 2003 | 07:18 AM
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Car: '86 Iroc
Engine: 350 TPI
Transmission: T-5 with Pro-5.0
Thanks for the info guys!!!!!!!!
Your help is greatly expected.. I mean appreciated!

Seriously though....THANKS!!!!!!
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Old Apr 1, 2003 | 12:40 AM
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Resistance of the wire... thats a new one.

Assuming the connection is good like its supposed to be, the resistance of the wire will be determined by the length of the entire wire, the location of the connector doesnt matter. There are plenty of 'universal' o2's out there as well, that you splice into your stock harness. Most are longer. I have my o2 in BFE comparatively on one car, it runs just like its supposed to with the longer wire in place.
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Old Apr 1, 2003 | 07:13 AM
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From: NC
Car: '86 Iroc
Engine: 350 TPI
Transmission: T-5 with Pro-5.0
Well, just to make sure, I spliced into the wire on the harness and everything seems fine. The motor is IN and RUNNING!!!!!! I am SO happy!!! My buddy fired it last night so I get to drive it this afternoon!!!! WOOO HOOOO!!!!!!!!!


:lala: :lala: :lala: :lala:
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Old Apr 1, 2003 | 07:22 AM
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Originally posted by madmax
Resistance of the wire... thats a new one.

Assuming the connection is good like its supposed to be, the resistance of the wire will be determined by the length of the entire wire, the location of the connector doesnt matter. There are plenty of 'universal' o2's out there as well, that you splice into your stock harness. Most are longer. I have my o2 in BFE comparatively on one car, it runs just like its supposed to with the longer wire in place.
It is just what I was told on the lt1 board on camaroz28.com. I know that there sensors are heated but other than that they are pretty much the same right? I dont know that it is accurate, but I figured it would be good to mention in case. Also they didnt say it was the resistance, but I didnt know what else it could be. They just said that you couldnt change the length of the wire actually connected to the sensor. I have long tubes and have my harness lenghened to put the oxygen sensor in the spot right after the collector because I didnt want to mess up the coating. Anyway, I also have a heated O2 from a fourthgen and got the harness clip from a 3.1 to wire it up.

Ben
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