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Temperature sensor in exhaust cat, 79 911sc


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Hi folks,

Just wonder can I just remove a d disconnect the temperature sensor that is attached to the end of the Catalytic converter (figure 3, 6c). The exhaust temperature was introduced around 79-80 to Japanese market, which the car was imported from. I have a straight through pipe bought to replace this cat, can I just remove and disconnect the exhaust temperature sensor or do I need to weld a hold and attach the temperature sensor?

many thanks,

justin 

 

 

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Edited by Justin689
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That is a Lambda sensor (oxygen sensor) on the end of the wire. It was/is connected to a sensor control unit (small black box under the nearside seat IIRC), this then controls the frequency Valve, which is a vibrating valve in the fuel line that controls the pressure in the fuel distributor, reducing/increasing fuel flow for improved emissions.

It's a US, Canada, Japan thing. Have a search on Pelican for the best way to deal with it. I can't remember if you can just disconnect it, or if you have to make some mods.

 

Mark

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  • Justin689 changed the title to Temperature sensor in exhaust cat, 79 911sc
35 minutes ago, SilverWT said:

That is a Lambda sensor (oxygen sensor) on the end of the wire. It was/is connected to a sensor control unit (small black box under the nearside seat IIRC), this then controls the frequency Valve, which is a vibrating valve in the fuel line that controls the pressure in the fuel distributor, reducing/increasing fuel flow for improved emissions.

It's a US, Canada, Japan thing. Have a search on Pelican for the best way to deal with it. I can't remember if you can just disconnect it, or if you have to make some mods.

 

Mark

Thanks mark,

was the oxygen sensor labelled 6A in the diagram? This one is at the position of 6C...

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