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#1 Old 05-01-2008, 01:47 AM
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o2 sensor wiring

I have a 92 pickup 2wd 22re, decided to replace both o2 sensors, I bought the Bosch universal sensor, but I notice that wiring has different colors than the original sensor. can anyone tell me how to match the wires? thanks

Bosch sensor original sensor

White Black
White Black
Gray White
Black Blue
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#2 Old 05-05-2008, 12:08 AM
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I have an 89 4wd with the 22re, I also used the Bosch, and two years later when I accidentally yanked the wire while changing out exhaust, I had no idea which wire went to what , soooo, what I did was go back to my parts store (Advance, in this case) and ask to see the box for that same part, wrote down the wire codes, and was good to go. (I'm a regular customer there, they all know me by name. ) If I still had that piece of paper I would share...
Hope this helps!
Steve in Maine
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#3 Old 05-05-2008, 12:00 PM
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What, there are two O2 sensors? I just ordered a Denso O2 sensor from sparkplugs.com. May be I should order a second one.

Last edited by ludeaddict; 05-05-2008 at 10:02 PM.
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#4 Old 05-05-2008, 01:26 PM
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Was the CEL on, why are you replacing the 02 sensors?
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#5 Old 05-06-2008, 06:41 AM
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Oxygen sensor wire color codes:

http://home.att.net/~ngksparkplugs/w...ome.html-.html
http://www.dansmc.com/spark_plugs/sp...s_catalog.html
http://c-67-170-224-64.client.comcas...ireColors.html
http://4crawler.com/4x4/O2SensorWireColors.html

The federal and Canada model Toyota 4-Runners and pickups have one oxygen sensor where as the California models have two. For tune up parts specially oxygen sensors avoid using aftermarket makes specially Bosch and avoid using universal fit types instead stick to buying exact fit Denso or NGK:

The oxygen sensor is replaced for free in the USA only when the vehicle reaches it's first 80 000 miles regardless of the age & number of owners as stated in the factory owner's manual in the maintenance section, some Toyota dealerships are reluctant to replace it for free if that happens contact the Toyota regional head office for your region where they will give your local dealership 48 hours to comply.
On average the oxygen sensors should be replaced every 6 years or 100 000 miles or so which ever comes first as stated in the owner's manual, warranty booklet and factory service manual.

Symptoms of a bad o2 sensor are poor gas mileage, hesistation in acceleration, worse emissions, and in severe cases after the stat opens the engine can no longer maintain stable 750 rpm (with manual 5 spd tranny) idle and the engine begins to stall.

The 02 sensor is designed to function once the vehicle has warmed up which is about after 10 minutes where the thermostat begins to open at 190 or 195 degrees Ferenheit depending on thermostat then the vehicles ECU system enters what they call a "closed loop system" then the exhaust manifold's temperature reaches 400-600 degrees Ferenheit (I think)that's where the sensor starts to do it's job which is usually when the thermostat first opens up then the oxygen sensor senses the ratio of air to fuel and sends a signal back to the ECU then ECU compensates by increasing or decrease the open time for the fuel injectors to pump fuel.

So usually the problem of stalling shows up after about 10 minutes of driving or so. Many folks think that the o2 sensor is bad but an exhaust leak can cause excess oxygen to enter the exhaust system thereby fooling the sensor into thinking there is too much oxygen, there are other problems that could cause it to give false reading such as a vacuum leak.

If you discover that the o2 sensor is bad and it is not under warranty then from my/others experience/research purchase an o2 sensor in the following order:

1)Toyota (NipponDenso now called Denso)
2)Denso aftermarket (Same as original but sold aftermarket)
3)NTK (oxygen sensor division of NGK)

Available at:

http://www.toyotapartsales.com (1-866-221-4696)
http://www.1sttoyotaparts.com/partscat.html (10% shipping by Fed Ex or free shipping with $100 & over speak to Roger at 1-888-271-3948)
http://www.toyotadiscountparts.com (free shipping with $100 & up)
http://www.toyotapartsandservice.com (part # lookup)
http://www.densoaftermarket.com
http://www.densoproducts.com
http://www.sparkplugs.com
http://www.ngksparkplugs.com (use coupon code "dodgetalk" to get extra 10% off)
http://www.rockauto.com
http://www.autopartsonlinecanada.com
http://www.autopartsway.ca (1-866-530-5789) (Tsubakimoto timing gear kit, supplied by World Pac 1-800-888-9982)
http://www.autopartsway.com (Tsubakimoto timing gear kit, supplied by World Pac 1-800-888-9982)
http://www.toyotaownersonline.com/pu...arkplugs06.pdf

Sidney
E-mail:sidneybek(at)yahoo.com
Dartmouth,Nova Scotia
Canada

Last edited by Sidney; 01-03-2010 at 09:30 AM.
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#6 Old 06-21-2009, 04:34 PM
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Quote:
Originally Posted by sipsip View Post
I have a 92 pickup 2wd 22re, decided to replace both o2 sensors, I bought the Bosch universal sensor, but I notice that wiring has different colors than the original sensor. can anyone tell me how to match the wires? thanks

Bosch sensor original sensor

White Black
White Black
Gray White
Black Blue
I am having same problem did you ever get the answer?
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#7 Old 06-21-2009, 11:06 PM
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Bosch Oxygen Sensor

89 4x4 X-Cab V6
WARNING: I'm not a professional tech - use any advice at your own risk. Working on vehicles is risky: you can kill or maim yourself or damage your truck if you don't know what you are doing. It's your responsibility to get qualified help if you lack auto repair training/experience.
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#8 Old 08-24-2009, 03:54 PM
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I bought my sensor from www.autopartsway.ca I had great experience with them.
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