O2 sensor response times - cleaning ?

[derek barger]

What I do when an 02 sensor is fouled by contaminants is to remove the
sensor and heat with propane torch. Heat with propane torch for 30 secs then
remove let cool. While you are doing this attach a meter to O2, watch
voltage heat and remove watch voltage swing and response time from 1volt to
0.


>At 05:35 PM 27/3/2000 -0800, Orin <orin at diy-efi.org> wrote:
>>Heywood pg 301:  "Equilibrium is established in the exhaust gases
>>by the catalytic activity of the platinum metal electrodes."
>
>mmmm Just a thought,
>
>Is there any chance a 'hot purge' in fre O2 at high temp can 'flush' the
>sensor ?
>
>ie. Remove sensor from exh manifold, put in oven with liberal feed of pure
>O2 and heat to exhaust temp for a period of time, perhaps cycle through
>temp range whilst flowing o2 over it...
>
>I'm guessing this might flush out some/most contaminants - anyone in a
>position to try this - or interested ?
>
>I wonder if someone has an oxy torch, can make up a little pipe, close off
>the end, heat it with the oxy (not too hot), fill the pipe with O2 from
>the oxy tank and let it cool down filled with pure o2 ?
>
>Rgds
>
>:) Mike
>
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