emissions fail on lambda / catalyst!

Using the flow chart then you do a CAT test unless there's an exact match in the database.

As the vehicle is older than September 2002, if engine is older than the vehicle then test to the limits of the age of the engine.

The presenter must provide proof of the age of the engine

thank you! testing to the limits of the engine!, selecting NoN cat vehicle,( providing they provide proof of engine details ) i take it i can not fail it on the lamber reading? as the CO and HC were in limits.
There is no selection in this section to fail for lambda reading.
The year and model of the metro was fitted with a cat. But engine has changed. its just to verify what the outcome should be. can anybody else shed more light on this?
Thank you

hi yes its been given a no! Have been made aware a vvt engine should have a cat. but these engine i believe where started about 1988-1990 theres a few years before the 1 aug 1995 cat test diagram.

I don't recall seeing vvt k series 1.8 till mid/late 90s and I have NEVER seen one without a lambda sensor sprouting out the manifold!irrelevant any way,as you've been told by 3 different folks the owner has to furnish proof of the engine age if he wants a non cat test,no proof=test as presented which will be a cat test.not the end of the world anyway,any sh1tty old cat if working will do to get it thru and finding/welding one in aint the krypton factor is it?

theres owners clubs/heritage etc for all the tech info if you feel you need it.i do wonder at the mentality of doing it to a metro tho,theres gonna be few enuff to make it a collectors car in fact a mate of mine used to collect em,he only stopped when scrap dropped below £80 a ton....

Thank you folks for your input. just wanted to clarify Tested the right way so will see what happens if it returns for retest.

1st August 1995 leads to a BET & full cat test regardless of engine type unless proof of engine age is provided.

There was a time period in that era where some CAT vehicles, Ford, Vauxhall etc were not type approved for a CAT test, therefore were exempt. At the time of writing I'm looking through "outdated" special notices to see if I still have the past notification about what was agreed at that time. To date I can find special notice October [10/98]. Test stations in those days still had a 2 gas analyser which was not capable for completing a CAT test, in fact I've still got that 2 gas analyser in my garage, along with the first DGA 1800 1996 specification analyser. 

The special notice says that Test Stations that have a 1996 specification anaylser may also continue to use an approved 2 gas analyser after 1 January 1999, for testing vehicles that have been identified as not requiring a CAT test.

A special notice review was carried out around 12/98, many items were removed and consolidated, I'm guessing somewhere around this time VI removed the information about testing vehicles with CATs fitted that were exempt!

A note about BET software. Special Notice 9/2001 told us that BET was voluntarily introduced on August 1 2001 to help simplify emissions testing on vehicles first used on or after 1 August 1992. The BET software at that time was not widely available, and was not resolved until December 31 2002. The BET test was not mandatory until that date.

From August 2002 the mot manual had a considerable update and amendments, therefore unless somebody still has a copy of the original special notices and manual pages, what was exactly said about these CAT exempt vehicles in that time we might now never know properly!

Special Notice 4/2003 told us that an update had been issued regarding emissions incorrect information supplied, hence MG Rover Group being listed.

To find an exact match;

Use the VIN number to find the following;

Model code, this consists of the 4th and 5th numbers.
The engine code, this consists of the 8th digit of the VIN number and defines the engine type.
The serial number is the last 6 numbers.

I'm sure from the above the engine can be identified. 

 

Out of interest I've had a quick trawl of good old Google.

The 145 bhp 1.8 VVC engine first appeared in the MG F, which was launched in September 1995 - post full CAT test date of 1st August 😐