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 can´t 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#¤% would you know...?? :rolleyes:

How about showing us a pic - he probably replaced the cat with a premuffler which sort of looks like a cat.

Here is a badly taken pic. Is it a premuffler ?

http://forums.pelicanparts.com/uploa...1130517978.jpg

That looks like a premuffler to me.

No that looks just like the cat that was on my car.

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 ! :)

The O2 sensor fitting should be on the top front section, if there is one. If not, you can weld one in, no biggie.

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.

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. ??

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.

Aha ! The Bentley manual is American. So, its a premuffler - thats established.

But still, does it not need an oxy sensor ?

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

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 ?

No it does not.

Thats a double AHAA !

Puzzle solved - as usual around here.

Thanks a lot !!

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.

Your great guys ! I could cry out of shear appreciation - I wish school was this educational for my kids.

Euro 85's had no cat and ran on leaded fuel and pumped out 231bhp.

Two out of three. Its UNleaded gas.

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.