Mot And Catalytic Convertor On 1992 Car.

[iPlod999 143 1 Cars]

My 205 GTI was one of the cancelled Japanese orders from 1992.

 

It is fitted with a Catalytic Convertor for the emission laws in Japan at the time. My understanding is that the UK did not bring in these laws, and having a Cat fitted till 1993.

 

My car failed the emissions part of its MOT a little while ago.

 

I understand that cars fitted with a Cat the test is more stringent.

 

My question is....do I have to keep the Cat fitted to the car, would I be able to fit a non Cat exhaust and would the car pass on the less stringent test?

 

Cheers.

[Anthony 1,003]

Here's the relevant flowchart from the MOT manual.

 

 

As far as I know, "used" in this context means manufactured and not registered - hence lots of K and L reg 205/309's that had sat around prior to being registered (eg 309 Goodwood's) don't need to sit a CAT test.

Edited December 21, 2016 by Anthony

[iPlod999 143 1 Cars]

Thanks Anthony.

 

The car was registered in Oct 1992 and I know that the Japanese Export cars sat around for a while before coming onto the UK market.

 

I remember someone somewhere said there is a way of working out the VIN number to find out the build date.

 

I'll start searching.

 

Thank you.

[jackherer 543]

Do you have the printout for your failed cat test?

[iPlod999 143 1 Cars]

Here you go Kieron.

 

[welshpug 1,657]

it was August 92 as the chart states, so if your car has a cat it has to stay, had the same with my zx, its registered in 92 on a k and came with a cat.

 

only way around properly is a non cat engine, however that is borderline fail on a non cat engine as the co is so high, it should be a lot lower as the printout states, even a non cat engine should run much lower, nearer 1-1.5%

 

guessing as its a lambda car youll need to test the coolant temp sender and lambda.

[Henry Yorke 269 3 Cars]

Japanese cars have a different cat to UK cars afaik. I was looking at this in service box the other day and they have a different part number. Also there is a different part number between a DFZ and a DKZ engine, but am not sure on the real difference.

[iPlod999 143 1 Cars]

I found the build date in a prior comment I put on a thread.

 

18/12/1990. Almost 2 years till it was registered.

 

Cheers Mei. I'll find someone somewhere who can test those bits.

[welshpug 1,657]

just need a multimeter and the test procedures which are in Autodata or a haynes manual (405 one iirc covers that system)

[pugdamo 111 2 Cars]

Just to clear up the term "used" is done from the date of first use which comes up once the vehicle details are entered into the MOT system, yours as has been said will need to pass a CAT test.

[toolie72 67 1 Cars]

How's car running? I always thought co value was fairly important in the 205 as to how driveable they are-might be talking s*ite of course

[iPlod999 143 1 Cars]

A little clearer on 'used' now. However, car was registered Oct 92.

 

Don't know if the MOT bloke checked on a computer before hand or just saw the Cat and tested it that way.

 

Toolie72.

 

Runs like s*ite off a shovel. Only the usual problem of revs running up and down on idle.

[steve@cornwall 100]

Yet if fitted with an earlier engine , is it not tested the age of the engine? So if ,as with most, the engine number tag had become displaced, one "could" register an earlier engine number and forever be tested as non-cat? Seems ridiculous that nothing more tan being a few weeks later with registration means it should fail.

[j_turnell 137 3 Cars]

When I last MOT'd mine, which is an L reg, I managed to get it tested as a non CAT, apparently there is an option during the test for competition use, i.e stripped out with one seat, and that's a non CAT test. This is what I was told anyway, I was just pleased it got through!

[jackherer 543]

however that is borderline fail on a non cat engine as the co is so high, it should be a lot lower as the printout states, even a non cat engine should run much lower, nearer 1-1.5%

 

The cat test is done at 2500 RPM and the non-cat test is done at idle so the CO could be very different if retested as a non-cat.

 

Based on those numbers I agree that it needs repairing rather than recategorising anyway, lambda 0.93 translates to 13.67:1 AFR.

 

Does it have Jetronic or Motronic? If the latter can you read the fault codes:?

[iPlod999 143 1 Cars]

Kieron.

 

You must remember I have no idea about complicated things on cars.

 

Jetronic/Motronic? Have not got a clue.

[welshpug 1,657]

look at the sticker on the ecu

[welshpug 1,657]

When I last MOT'd mine, which is an L reg, I managed to get it tested as a non CAT, apparently there is an option during the test for competition use, i.e stripped out with one seat, and that's a non CAT test. This is what I was told anyway, I was just pleased it got through!

yours is diesel originally anyway isn't it?

[j_turnell 137 3 Cars]

yours is diesel originally anyway isn't it?

 

Yeah but as it has a petrol post 92' engine it was required to have a CAT test.

[iPlod999 143 1 Cars]

Erm.....where would I find the ECU?

 

So embarrassed right now!

[welshpug 1,657]

above your right knee.

[petert 586]

Take pic of the dizzy. It's easy enough to tell the difference form there.

[pugdamo 111 2 Cars]

A little clearer on 'used' now. However, car was registered Oct 92.

 

Don't know if the MOT bloke checked on a computer before hand or just saw the Cat and tested it that way.

 

Toolie72.

 

Runs like s*ite off a shovel. Only the usual problem of revs running up and down on idle.

He would have put the reg and the last 6 of the Vin in on a computer/ipad/phone to log on the mot,it will show a list of vehicle details on the screen the date of first use will be there, then then you can print a checklist off that will have it on aswell.

[dcc 855]

Your car could be a 1996 originally fitted with a cat, if you retrofit a 1989 engine without cat you get tested as non cat.

 

I'd try to get what youve already got through the proper test, but your cat is 25years old

[iPlod999 143 1 Cars]

Here is THE ECU.

 

 

 

and the dizzy.