o2 sensor wire diagram??

jackattack

New Member
Apr 12, 2007
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kitchener
can any1 help me.... the person who owned my 88 supra b4 me took the o2 and bypassed the plug and soldered the wires. Well lucky for me they fell apart and now im stuck and cant find witch wire solders were. There is 2 blk and one blue to witch wires do thous solder to? on the harness its blk and orange , green and orange, brown thous are the three wires
 

Scruggs86.5T

New Member
Dec 8, 2007
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Slidell, LA
wow, thats kinda baffling me. i know i have a red/blue(stripe), a red/black(stripe) and a white wire. I have seen wires that have been exposed to a good bit of heat change color. it could be that the 2 blacks are actually the red w/stripes and the blue is actually the white one. i think the blk/orange, the grn/orange and the brown you are taliking about is;
blk/orange= red/blk(stripe)
grn?orange= red/blue(stripe)
brown= white
that is what would make sense to me....other than that i don't know what to tell you.

there is a complete wiring diagram here, the O2 sensor labeled OX is on page 23, maybe this will help.......
http://www.supracentral.com/ewd/1987_TOYOTA_SUPRA_EWD.pdf
 

Victor Charlie

Supramania Contributor
Aug 18, 2009
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Ann Arbor
Please clarify what was bypassed. do you mean the wires from O2 sensor to the ECU were connected up normally, but the normal connector was cut out? perhaps there was an A/F meter that was cut out, leaving cut leads that can be taped over and ignored? Is it a stock O2 sensor? your wires - two black and one blue, don't sound like stock wires.
 

jackattack

New Member
Apr 12, 2007
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kitchener
Srry its not a stock o2. The plug on the harness that plugs into the o2 directly has been cut out and just soldered so my o2 is apart of my harness now lol. I found half the o2 plug in my glove box and it looks like this
. Blue signal

.blk heater .blk heater

can any1 unplug there supra o2 and see what wire matches were
 
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