o2 Mass Airflow Sensor

[Anonymous]

Cut these open on the lathe, you'll notice that the ceramic goes clean through to the wire end of the sensor.

If you had thousands to open for processing, I would cut the tip off then compress the sensor using a hydraulic press, then turn it 1/4 turn giving it a tweak with the press to open the canister allowing the broken ceramic to fall out.

 

[Chumbawamba]

And so what are we looking at and what's inside there to make us want to go through all that trouble?

 

[Anonymous]

And so what are we looking at and what's inside there to make us want to go through all that trouble?

Maybe not enough to warrant all the trouble of opening them up, if they're to much bother I'll pay the freight for any you want to donate.

Most of the sensors I have scrapped out had gold pins, some I suspect are palladium plated.

Some of the ceramics have gold contact pads while others have the wires brazed on.

Because of the crude methods employed to open an o2 sensor many do not get a chance see the parts before they're broken up into little pieces, so I have taken the liberty to submit pictures from dismantled sensors so that you can see for yourself whats inside.

http://www.platinum.matthey.com/applications/industrial-applications/sensors/

 

[Anonymous]

And so what are we looking at and what's inside there to make us want to go through all that trouble?

You tell me - look like platinum, I processed 15 sensors. Yea I know the pot has a crack and will be retired.

 

[glorycloud]

Nice! 8)

 

[Anonymous]

Nice! 8)

Started out with 18 sensors, but lost two or at least the contents when they came loose of the chuck. They're fairly easy to get apart, no need for a press, incineration would have been nice to loosen the plastic plugs crimped at the end.

If anyone is interested I'll post pictures from the wires and connectors from inside the sensors if they test positive for PMs.

 

[qst42know]

Careful with incinerating that plastic. It's likely teflon and highly toxic when burned.

 

[Anonymous]

Careful with incinerating that plastic. It's likely teflon and highly toxic when burned.

The crimped plug pushes to the inside using a punch once the ceramic has been removed. I'm pretty much hog tied, my neighbors ya know are too quick to pick up the telephone to report me. No longer on specking terms.

The gloves are complimentary of Monsanto and other herbicide company's they're free for the asking. I've been getting two pairs at a time, made a trip into the city and came home with a dozen pairs from various suppliers.

 

[jimdoc]

Gill,
From an assay on oxygen sensors I got this info;
-Bosch/Kieffgo 4 wire 30 mg
-A/C 1 wire 40 mg
-Universal 1 wire 45 mg
-Bosch 1,(2or4 wire) 45 mg
-N/D 4 wire 60 mg
-N/D 1 wire 70 mg
-NTK 1 wire 80 mg
-NTK 4 wire 90 mg

Hope this helps if you didn't have this info already.


Jim

 

[Anonymous]

Gill,
From an assay on oxygen sensors I got this info;
-Bosch/Kieffgo 4 wire 30 mg
-A/C 1 wire 40 mg
-Universal 1 wire 45 mg
-Bosch 1,(2or4 wire) 45 mg
-N/D 4 wire 60 mg
-N/D 1 wire 70 mg
-NTK 1 wire 80 mg
-NTK 4 wire 90 mg

Hope this helps if you didn't have this info already.


Jim

Thanks Jim, I did not previously have this information. Most of the ones I had were Bosch 4 wire.

 

[jimdoc]

Gill,
On the report I have the Bosch 2 and 4 wire line was left blank under the 1 wire 45 mg amount, so I assumed that it was the same. It may
mean that they were not assayed, so the Bosch 2 and 4 wire figures may be wrong,but my guess is they can't be very far off if thats the case.

Jim

 

[Oz]

Well Jim, that was a very nice commentary sharing assay results that you paid for like that so freely. I have not seen that detail before on the oxygen sensors.

Thank you for sharing.

 

[Platdigger]

Gustavus, my understanding is the "Mass Airflow Sensor" is on the intake side.

 

[butcher]

mass airflow sensor is intake air to engine, fuel injected engines, two types meter and hot wire types.

 

[Anonymous]

If they're not o2 sensors what be they. These came of the exhaust system between the cat and manifold.

 

[Barren Realms 007]

If they're not o2 sensors what be they. These came of the exhaust system between the cat and manifold.

I have sensors in my exhaust. But Ford spends more for quality...!!!! :lol: 8) :twisted:

 

[butcher]

There can be one or two oxygen sensors in the exaust for emmission control,

 

[Barren Realms 007]

Mine has 2 just above each cat I believe. I don't even want to say what it would cost to replace the cat system in my truck.

 

[Oz]

I think everyone is confusing 2 very different items that contain PGM on modern vehicles. The mass airflow sensor on the air intake, then the O2 sensor on the exhaust.

 

[Barren Realms 007]

I think I started that. Sorry.