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Cleaning 02 Sensors? 

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 3:27 pm 
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If a code had been logged, simply replacing the sensor won't clear the code. You either need to disconect the battery long enough OR clear the code with a scan tool.

Not all O2 code will mean it's a sensor problem. an sensor out of range code only means the sensor has found a very rich or very lean condition. I've seen leaking fuel pressure regs cause O2 sensor out of range codes.
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 3:57 pm 
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tickford_6 wrote:
If a code had been logged, simply replacing the sensor won't clear the code. You either need to disconect the battery long enough OR clear the code with a scan tool.

Not all O2 code will mean it's a sensor problem. an sensor out of range code only means the sensor has found a very rich or very lean condition. I've seen leaking fuel pressure regs cause O2 sensor out of range codes.

also comes up on lpg as lean,i scan every auto service.

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 4:19 pm 
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I don't have a scan tool so if I put a new oxygen sensor on my EL, How would I know if it was working properly without any error codes? Or would I need to disconnect the battery for an hour or two to reset it? Out of interest, My car isn't on LPG so unsure if that makes any difference.

 

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Last edited by revcore on Mon May 14, 2012 4:31 pm, edited 1 time in total.

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 4:22 pm 
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Non-injected LPG systems usually use a relay to cut the O2 sensor wire during LPG operation so that petrol fuel trims aren't learnt while running LPG. This can trigger false codes.
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 4:44 pm 
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revcore wrote:
I don't have a scan tool so if I put a new oxygen sensor on my EL, How would I know if it was working properly without any error codes? Or would I need to disconnect the battery for an hour or two to reset it? Out of interest, My car isn't on LPG so unsure if that makes any difference.


yes...
you only need to disconnect the battery for a few mins to reset the ecu and clear any codes..
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 4:54 pm 
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TROYMAN wrote:
revcore wrote:
I don't have a scan tool so if I put a new oxygen sensor on my EL, How would I know if it was working properly without any error codes? Or would I need to disconnect the battery for an hour or two to reset it? Out of interest, My car isn't on LPG so unsure if that makes any difference.


yes...
you only need to disconnect the battery for a few mins to reset the ecu and clear any codes..


Excellent...Many thanks for the info.

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 5:52 pm 
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I decided to take a gamble and see how this VDO sensor works....

http://www.ebay.com.au/itm/290709338499 ... 1497.l2649

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:01 pm 
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so to test a sensor via multimeter what should it be reading out ?

found a nice looking denso sensor at pick a part it read 6ohm while cold but what should it read when warm ?
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:12 pm 
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EF_wanabe wrote:
so to test a sensor via multimeter what should it be reading out ?

found a nice looking denso sensor at pick a part it read 6ohm while cold but what should it read when warm ?

Think you may be reading the heater element.

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:13 pm 
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true grrr ;(

and its voltage i should be looking not restianse gosh i sound like an idot
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:16 pm 
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dont be a tight a** and buy a new one, ........
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:18 pm 
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i have to be the king of tight a** im not going to be driving any way its just a back yard car im fixing up
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:19 pm 
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revcore wrote:
I don't have a scan tool so if I put a new oxygen sensor on my EL, How would I know if it was working properly without any error codes? Or would I need to disconnect the battery for an hour or two to reset it? Out of interest, My car isn't on LPG so unsure if that makes any difference.

i trained my auto service guy to scan my cars before they service the auto and change diff oil,funny what is logged,it said my high speed thermo fan wasnt working-spot on,we checked it and was stuck,locked.found small magnet bits jammed in the rotor :shock: :shock:

 

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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:20 pm 
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well dont worry about the o2 sensor.
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 Post subject: Re: Cleaning 02 Sensors?
Posted: Mon May 14, 2012 8:21 pm 
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i just wanted to know if there is a way to test what wires n what setting the multi meter to be on

so people in the future can read from this

+ i will cheek mine every engine oil service which is every 5K km
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