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Location:
Perth
Registered:
July 2004
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o2 sensor cleaning
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Sat, 02 October 2004 01:30
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how do you clean an o2 ensor? my manual tells me nothing.
steel wool?
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I Supported Toymods
Location:
Sydney
Registered:
December 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 02:02
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No need to clean these little buggers.
Just whack it back in and any crap will burn off... If you think the one you've got is stuffed then replace it.
Just like anything that gets lodged in your exhaust the o2 sensor will always look a bit dirty though.
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Location:
Perth
Registered:
July 2004
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Re: o2 sensor cleaning
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Sat, 02 October 2004 02:09
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its just that car had been getting oil in the exhaust manifold so i thought it may be fouled.
you cant use petrol on them right?
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 02:23
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If it has oil in it, it will probably be fucked. Just leave it and hope that it will burn away.
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Location:
tas
Registered:
June 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 07:36
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can o2 sensors be measured with a multimeter to test if there working? I know the ECU will give a code if the 02 sensor isn't working, But i have an o2 sensor on a carb engine.
Probably need an oscilloscope :(-
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Location:
Perth
Registered:
July 2004
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Re: o2 sensor cleaning
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Sat, 02 October 2004 08:09
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yeah get the cathode ray ones. they are the sickest.
Problem ended up being that the afm is not working properly. car runs exactly the same with afm connected to air inlet as when the pipe is disconnected, hence a new afm is needed. correct me if im wrong?
i just put all the finer details of the car back together for the last 7 hours. its beer time
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I Supported Toymods
Location:
Sydney
Registered:
December 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 14:45
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You can test o2 sensors... the method depends on the car but generally you whack an analogue multimeter or a cro between the ox1 and te1 (I think) and when the sensor is in closed loop mode you should see a flicker on your dmm a few times a second.
Check your engine manual for specifics on how to do it.
If you do not have a manual post up details of your car / engine and I'll post up the details from the mods.
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Location:
tas
Registered:
June 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 15:23
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toobs your a legend thanx for that bit of info! an analogue volt meter should also do the trick, i have one around here somewhere.
Ok the engine is a 3S-F wich has no ECU/EFI but it does have an O2 sensor plumbed into the exuast. I have a gregory's manual wich has nothing on the 02 at all. So when the car warms up and goes into closed loop mode the 02 sensor should be switching 0v,5v,0v,5v etc wich means it is working?
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I Supported Toymods
Location:
Sydney
Registered:
December 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 16:02
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Yeah it should flicker between zero and 0.5v (up to about 1v but not 5)
You would have to have an ECU if you've got a 3SFE engine... unless there is a 3SFC engine... but I've never heard of that.
If you can post up the year model and type of your car I can look at mods a bit better. (E.g. 91 ST182 Celica)
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Location:
tas
Registered:
June 2002
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Re: o2 sensor cleaning
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Sat, 02 October 2004 17:05
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The car is an 89 holden apollo (or sv21 camry in disguise)
The engine is a "3S-F" not a "3S-FE" wich is easy to mistake. It's a carburettor model. To tell you the truth i have not heard/seen this particular engine anywhere. It's like the only one i've ever come across. And puzzles me that it even uses an O2 sensor without an ECU to monitor the exuast.
Anyway it has a diagnostic port, but most of the connections are missing. There should be an Ox and Te1 there, i hope.
Let me know if you can dig up any information on it. Should be exactly the same as a camry of the same era.
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Location:
Brisbane
Registered:
May 2002
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Re: o2 sensor cleaning
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Sun, 03 October 2004 00:55
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| dingaling wrote on Sun, 03 October 2004 03:05 |
The car is an 89 holden apollo (or sv21 camry in disguise)
The engine is a "3S-F" not a "3S-FE" wich is easy to mistake. It's a carburettor model. To tell you the truth i have not heard/seen this particular engine anywhere. It's like the only one i've ever come across. And puzzles me that it even uses an O2 sensor without an ECU to monitor the exuast.
Anyway it has a diagnostic port, but most of the connections are missing. There should be an Ox and Te1 there, i hope.
Let me know if you can dig up any information on it. Should be exactly the same as a camry of the same era.
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It might be an exhaust temperature sensor?
Cheers
Wilbo
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Location:
Brisbane
Registered:
July 2002
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Re: o2 sensor cleaning
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Sun, 03 October 2004 01:27
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No, it's definitely an O2 sensor. I've got an SV21 with a 3S-FE and was wondering where the 02 sensor was. I found out the the 3S-FE's do not have one, however the 3S-F's do. Seems really strange 
The Gregory's manual does have how to check the O2 sensor - see page 127 (bottom right).
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Location:
tas
Registered:
June 2002
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Re: o2 sensor cleaning
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Sun, 03 October 2004 04:00
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that is really strange that he 3sfe doesn't have an o2 sensor, yet it has a catalytic converter, wich i thouoght needed o2 sensors to work effeciently.
page 127! Thanx i'll go check it out right now.
Still looking for that analogue multimeter toobs, will let you know the results.
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