No Cat, No Oxygen sensor.

[ryana89]

After checking over everything I can now confirm my car does NOT have a catalytic converter or O2 sensor.

It was imported from Africa with a factory 2E bottom end.
It also has a 4 in to 2 exhaust manifold on it aswell (not typical of a RV head?).
Did South Africa have lower emissions standards?

Also where would the connector/plug be for the O2 sensors harness/plug?
Getting an average of 15 litres per 100K, is that typical of a car with no O2 sensor, or should I check over other components?

Any comment or ideas are welcome cause Im at a dead end atm.
Ill posts some pics up later.

Thanks

EDIT: had a chat with the previous owner, and it came to Australia without a cat/O2 sensor.
South Africa did't have high emissions standards?
Either way, an O2 sensor improves/helps fuel economy wouldnt it? Somthing anybody in any country would want....

[Spyda]

How does it have a 2E bottom end from the factory?

Is it Kjet or Digi?

Without a O2 sensor on a Digi your fuel economy would be terrible, dunno about Kjet.

[h100vw]

VW built plenty of cars that don't have cats or lambda probes. Not having one fitted, assuming it shouldn't have one, wouldn't make the consumption double.

Is it digifant/electronic or K-jet mechanical?

Gavin

[ryana89]

How does it have a 2E bottom end from the factory?

Is it Kjet or Digi?

Without a O2 sensor on a Digi your fuel economy would be terrible, dunno about Kjet.

Of course, stupid me for not saying
Its a Digi 2.

I beleive these papers are rather original


I was also told by the previous owner that it had come from the factory with a 2E bottom end...And of course its got a piece of metal attached to the block stamped "2E****"

[ryana89]

And as I said, here are some pics (if you dont know what a catless MK2 looks like)

Off the 4 into 2 manifold into the dual downpipes


Downpipes bending to go towards the direction a cat would be in...


Downpipes eventually merging


And BAM no Cat.


Now this little 2 wire plug wouldn;t be where the O2 sensor harness usually plugs into would it?

[h100vw]

What's the part number of the ECU? That'll tell us quite a bit.

Gavin

[ryana89]

037 906 022

[h100vw]

Not as helpful as I had hoped. I couldn't find it on ETKA. google threw up a couple though which makes me think the ECU is from a 2 litre Passat. I can't tell which year though. I know that the very early MK3 GTIs that had this engine, didn't have cats fitted in the UK.

So it is entirely possible that there is no cat/lambda needed. Could be any number of reasons yours is using lots of juice. Coolant temp springs to mind.

[ryana89]

Not as helpful as I had hoped. I couldn't find it on ETKA. google threw up a couple though which makes me think the ECU is from a 2 litre Passat. I can't tell which year though. I know that the very early MK3 GTIs that had this engine, didn't have cats fitted in the UK.

So it is entirely possible that there is no cat/lambda needed. Could be any number of reasons yours is using lots of juice. Coolant temp springs to mind.

Thanks!
Have a funny feeling this car is a bit of a mix of VW parts.
(Blue) Coolant temp sender is the next thing to be replaced.
Going to save up and get the injectors removed and cleaned/rebulit too, maybe replaced if needed.

If it does have a O2 sensor harness to the ECU, then I may get an exhaust shop to weld a bung into my exhaust for a Oxygen sensor to mount into
One day

[h100vw]

Post a picture of the engine bay for me. Lets see what else isn't from the original car. It is easy to put a 2 litre bottom end in but has it got a full 2litre engine fitted??

Gavin

PS I think having the injectors rebuilt isn't worth the dollars.