97 toyota camry 4 cylinder O2 Sensor please help

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  #1  
Old 03-26-03, 07:38 AM
sabzb1980
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Question 97 toyota camry 4 cylinder O2 Sensor please help

Just recently i purchased a universal O2 sensor to replace my old one which was fryed... The universal one you have to wire yourself. There are four wires one blue, one white and two black.. The obvious is white to white and blue to blue.. From working whit some wiring my question is are the two black wires both grounds and do you have to make sure you wire the black wires to the proper black wire.. And if so how do you know whick black wire goes to which black wire.. Please help you can e-mail me @ [email protected]...Please help....

SAB
 

Last edited by sabzb1980; 03-26-03 at 08:07 AM.
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  #2  
Old 03-26-03, 08:15 AM
Join Date: Jun 2002
Location: Long Island, NY
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What you are replacing is an A/F Sensor. Not the same as O2 sensor. O2 sensor operates from 0-1 volt, A/F sensor operates around 3 volts. Must use OEM part unless aftermarket makes a direct replacement.

Toyota has one revision from the orig

Larry
 
  #3  
Old 03-26-03, 08:35 AM
sabzb1980
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Question 97 toyota camry 4 cylinder )2 sensor please help

Thanks for the reply.. the sensor i replaced is on the muffler coming right out of the manifold right before the cataylitic converter.. Would that still be the A/F sensore as you stated.. I was under the impression that it was an oxygen sensor.... The original had 4 wires like i said previously one blue one white and two black.. I know the blue goes to blue and the white to white with the universal O2 sensor and the replacment sensor had the same excat amount and colored wires..On the black wires since there are 2 on the sensor side and two on the connector side is there a specific way to connect those or does it matter what black wire goes to what black wire since im under the impression they are just grounds so it doesn't matter.. Please tell me more about the A/F sensor..

thank you

sab
 
  #4  
Old 03-26-03, 08:56 AM
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Location: Long Island, NY
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Not sure what you mean, The sensor under the hood is the A/F sensor, it is before the cat. The sensor under the car (about under the seat) is after the cat and is an O2 sensor

Besides operating at a different voltage ranges, the voltage reacts opposite of each other.

A/F sensor voltage increases when mixture is lean
O2 sensor voltage increases when mixture is rich

Not sure what would happen if you use the wrong sensor in the wrong app...but the ECM is big $$$

The wire colors are the same on A/F and O2 sensors


Larry
 
  #5  
Old 03-26-03, 09:03 AM
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Location: Long Island, NY
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Bite the bullet and put the right part in. Toyota has enough problems with A/F sensors without introducing aftermarket parts.

BTW if you have code PO 1133 their is a TSB for a revised ECM if you have the latest A/F sensor and are under 80,000 miles.

Larry
 
  #6  
Old 03-26-03, 09:04 AM
sabzb1980
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Toyota camry 4 cylinder O2 sensor

That makes sense thanks for the input.. What is an ecm by the way??? Guess i need to make sure i got the right part then... thanks again

Sab
 
  #7  
Old 03-26-03, 09:08 AM
sabzb1980
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toyota camry 4 cylinder O2 sensor

Not to much into the lingo what is BTW and TSB. And i do have PO 1133 as code...

You are a book of knowledge thanks for the advice

Sab
 
  #8  
Old 03-26-03, 09:49 AM
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Location: Long Island, NY
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ECM is the engine control module

TSB is technical service bulletin

Toyota had a lot of problems with A/F sensors and code 1133.

You must have a sensor built after aug 1999 and if still havings 1133 issues you are entittled to a updated ECM as long as your under 80,000 miles

Larry
 
  #9  
Old 03-26-03, 10:10 AM
Joe_F
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Thumbs up

Original poster: Stick with Larry's advice with regard to OEM parts or OEM direct equivalent parts. He is right on the money.
 
  #10  
Old 03-26-03, 10:19 AM
sabzb1980
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Smile 97 toyota camry 4 cylinder O2 Sensor

My Camry is a 97 model and besides recently purchasing the sensor there have been no other sensors that have been replaced. And from the looks of everything under the hood seems like all the sensors are still the originals... So I don't see why i would have a sensor in there built after Aug of 99.. Also on another note where is the pedal position sensor located.. Another code was given PO 1135 it says pedal position sensor A Circuit Intermittent..

Thanks

Sab
 
  #11  
Old 03-26-03, 10:39 AM
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Location: Long Island, NY
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1135 is A/F heater malfunction......having to due with the same A/F sensor, either bad heater or you had the key on with the A/F sensor unplugged

Larry
 
  #12  
Old 03-26-03, 01:32 PM
Joe_F
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Original poster: Your questions as far as what things are called, where they are located, etc are best answered by Autolibrary.org below or a service manual.
 
  #13  
Old 03-27-03, 08:09 AM
sabzb1980
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97 toyota camry 4 cylinder

thanks for the advice.. Did a little searching myself and i guess some toyota's they did outfit it with an air-fuel ratio sensor (depending on yr) and others with a regular O2 sensor... So i bit the bullet and $240.00 later the engine light is off..

Thank you

sab
 
  #14  
Old 03-27-03, 08:42 AM
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BTW, btw="by the way"; on-line lingo, not automotive.
 
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