Question about 1994 Toyota Tercel

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I have a blue and a white wire on my 92 tercel O2 sensor. Which one is ground? thanks!

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The one that does not arc when touched to the body (grounded) when actuated.

Posted on Jan 08, 2009

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Your blue wire will be the ground wire

Posted on Jan 08, 2009

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1996. Which color wires go where?


There should have been an instruction sheet in the box with the sensor. If not, you may have to go back to the store and ask for one.
Most sensor brands are different.

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Sounds like the wrong sensor for the car. The correct sensor would also have 3 wires: a signal wire, a ground, and a voltage, reference voltage wire. The 4 wire sensor sounds like it might be a Heated Oxygen Sensor, not applicable on your car.

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On a 1997 GMC Savana van, the heated oxygen sensor pre-converter for the right side has wires: tan from A7 (on the PCM) to pre-converter and purple back to A21 on PCM. The left side sensor has a tan/white...


Look it up here http://www.bbbind.com/free_tsb.html free wiring diagrams , Enter vehicle info. year , make , model and engine size .
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What color are the wires on a 1992 eagle talon to hook up my new stereo.for example.what color is the speaker wires,left front r front left rear right rear.thank you


Here you go.

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I need to know which wire on the 4 wire oxygen sensor (2 white, one grey one black) is the heat wire on a ford f-150 o2 sensor?


Hello! There are four O2's...Each O2 heater, left and right bank, front and rear, has it's own wire colors...These colors are "at the connector"...First series are the control ground sent by the PCM..
RR=White/Black...RF=Red/White...LR=Tan/Yellow...And LF=Yellow/Light Blue...........This series are the battery leads, hot when fuel pump relay pulls...RR=Violet/White...
RF=Red/Yellow...LR=Violet/White...LF=Red/Yellow...

If you have any questions feel free to ask...Guru...Saailer

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2 Answers

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Sounds like the rear O2 sensor is at fault, you may try to replace it yourself, if you are mechanically inclined.

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Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong

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Visit the on-line store, known as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
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that would be your best bet it is very hard to diagnose a injected v8 with out the right equipment but speaking from experience ( due to the fact we in Australia built these cars) the oxy sensors cause all sorts of problems and swapping them over does't necercarly prove much

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2 Answers

O2 sensor on a 1994 toyota tercel


Usually the O2 sensor will be on the exhaust manifold close to the engine, I'm going to assume you have a pretty good idea of what you are doing so if you need more details don't hesitate to ask.

Oct 30, 2008 | 1994 Toyota Tercel

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