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Location:
Adelaide
Registered:
July 2002
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O2 Sensors any one will do?
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Mon, 19 July 2004 04:14
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hey just wondering if i can use any toyota 02 sensor in my car
The reason is that mine kinda fell out and is now screwed, so i went to the wreckers and the only one i could find was out of a SV21 camry. the probe that goes into the manifold bit is slightly shorted and fatter but the flange is the same size and bolts up correctly, it seems to be working ok.
So is there any reason why i shouldnt use this sensor and get one for a 4age?
Cheers
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Location:
Brisbane
Registered:
May 2002
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 04:40
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Any O2 sensor bought at the wreckers is a bit of a lottery. Just buy a generic Bosch sensor, they're not expensive!
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Location:
Adelaide
Registered:
July 2002
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 04:52
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granted, but other than the fact it might be slightly dodgy, all 02 sensors are the same in what signal they send back to the ecu?
cheers
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Location:
Brisbane
Registered:
May 2002
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 04:58
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Not quite. There are several different types of O2 sensors: 1-wire, 2-wire, 3-wire and 4-wire. AFAIK if you have a 1-wire sensor it's interchangeable with any other 1-wire sensor.
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 05:38
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... and 3 wire sensors can be made to work with old 1 wire, and the other way around.
I hvant heard of 2-wire, and 4-wires are quite rare.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 06:15
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all of these sensors have 1 wire that goes back to ECU with the same signal, which basically switches at stoich.
1 wire grounds the sensor thru the body of the sensors and thru the exhaust.
2 wires means there is a seperate ground wire to eliminate dodgy earth thru exhaust.
3 wire is a 1 wire, but there are two extra wires for the heater.
4 wire is a 2 wire, but with two extra wires for the heater.
you can use any of them, but may need to add power and ground wires for heater or sensor.
if sensor is too far away from head, a heated version will give better signal..
that said, the O2 feedback is used only for cruising (for closed loop mixture control)
4 wire are not that rare  i still have 1 or 2 left 
more and more cars are using them because they have faster heat up time, and do not cool too much during idle.. and are becoming more popular for emissions purposes.
there are also 5 wire (and maybe 4 wire) wide band sensors, and these are totally different animals..
the bosch LSM-11? "wide band, as suggested by MoTec is not a wide band at all, but a heated, more highly calibrated narrow band sensor... a 'wide range narrow band' if you will...
but as Norbie says, a 1 wire is a 1 wire...
Cya, Stewart
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Location:
Adelaide
Registered:
July 2002
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Re: O2 Sensors any one will do?
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Mon, 19 July 2004 06:47
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ok thats probably more about 02 sensors than i'll ever need to know but thanks heaps for all the info it is appreciated
Cheers
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