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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Where is my oxygen sensor ?
According to the PO the catalytic converter were professionally removed since its not required on a 85 here in Sweden. Now, I have been toying with the idea of a new exhaust system and had a closer look under there today.
Sure enough, the converter it self is still hooked in but the heat shield is gone and even more strange - I canīt find the oxygen sensor, thats supposed to be mounted on the inlet side of the cat. Could the "removing" just mean that the internals were removed (it sounds rather hollow when knocking on it) ? And where did the sensor go ? I know - how in the h#Ī% would you know...?? 
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 08:06 AM
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How about showing us a pic - he probably replaced the cat with a premuffler which sort of looks like a cat.
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Randy '87 911 Targa '17 Macan GTS |
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10-28-2005, 08:15 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Here is a badly taken pic. Is it a premuffler ?
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 08:46 AM
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That looks like a premuffler to me.
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10-28-2005, 08:53 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,492
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No that looks just like the cat that was on my car.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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10-28-2005, 08:56 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Thanks ! Is a premuffler just a hollow tube connecting parts, or does it have a function ?
And, where did he put the sensor ?? Kurt, wait a minute - now I am confused ! 
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 08:57 AM
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Join Date: Aug 2002
Location: MD
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The O2 sensor fitting should be on the top front section, if there is one. If not, you can weld one in, no biggie.
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10-28-2005, 08:59 AM
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Join Date: Mar 2004
Location: City of Seattle, WA
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I submit that the PO doesn't know what he is talking about, and your car never had an O2 sensor or a catalytic converter, and the premuffler is original.
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Andy |
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10-28-2005, 09:00 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Now I am beyond confused ! I thought the DME used info partly from the oxy sensor and that the car would run like crap, if at all, without it.
According to Bentley, all 85 where equipped with a cat. ??
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Markus Resident Fluffer Carrera '85 Last edited by livi; 10-28-2005 at 09:05 AM.. |
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10-28-2005, 09:01 AM
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Not if it is a ROW car.
My car was a Euro delivery car that had to be Federalized before entering the United States. The pre-muffler was removed and a cat was installed. |
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10-28-2005, 09:28 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Aha ! The Bentley manual is American. So, its a premuffler - thats established.
But still, does it not need an oxy sensor ?
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 09:45 AM
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Some '87-89 Carreras used cats some did not
'87 -'89 930/25 used cats eng #s starting w/ 64H, J and K Sweden got 930/26 eng#s starting w/ 63F,G,H, and J
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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10-28-2005, 11:12 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Right, Bill.
Mine was imported from Germany three years ago. I think they have a regulation that would give you a lower tax (or some kind of cost reduction) if you had a cat installed. So maybe mine came without from factory, was installed by original owner i Germany and then removed when imported to Sweden ? Who am I now ? Sherlock Holmes ?? Still, about the sensor - does not the DME need it ?
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 11:34 AM
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Quote:
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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10-28-2005, 11:39 AM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Thats a double AHAA !
Puzzle solved - as usual around here. Thanks a lot !!
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 11:47 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
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Damn my bad, I forgot you had a ROW car. Bill is correct. You have a premuff and ROW didn't use an O2 sensor.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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10-28-2005, 12:01 PM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Your great guys ! I could cry out of shear appreciation - I wish school was this educational for my kids.
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 12:08 PM
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Join Date: Mar 2005
Location: Melbourne, Australia
Posts: 546
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Euro 85's had no cat and ran on leaded fuel and pumped out 231bhp.
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85' Carrera 3.2 02' Mazda MX5 |
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10-28-2005, 02:43 PM
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durn for'ner
Join Date: Feb 2005
Location: South of Sweden
Posts: 17,090
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Two out of three. Its UNleaded gas.
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Markus Resident Fluffer Carrera '85 |
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10-28-2005, 03:10 PM
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Join Date: Nov 2004
Location: Greater Metropolitan Nimrod, Oregun
Posts: 10,040
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Where is my oxygen sensor ?
- there are a bunch in each of the alveoli The car's O2 sensor will be a big round dingus sticking up before the muffler on a US car.
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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10-28-2005, 03:55 PM
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1987 Porsche 911 Targa 3.2 
1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
