I've examined the make up of several old OEM O2 sensors. They are made up of a ceramic type coating with some platinium and probably other regular metals. I do not believe the metals become depleted but that the sensor becomes contaminated over time and thus works less effective.
I've tried soaking them in a mild (citric) acid bath to clean them with mixed results. I'm wondering if soaking them in Neutra 131 or some other type of product would clean out any oil and/or carbon and make the sensor perform like new again ?
Anyone else been experimenting with cleaning the O2 sensors or have a good reason why they cannot be salvaged ?
I've tried soaking them in a mild (citric) acid bath to clean them with mixed results. I'm wondering if soaking them in Neutra 131 or some other type of product would clean out any oil and/or carbon and make the sensor perform like new again ?
Anyone else been experimenting with cleaning the O2 sensors or have a good reason why they cannot be salvaged ?