hi all,just had the car put through an mot n it failed on emissions(surprise,surprise) they said that it went into range but not long enough for it to passs,so its only just out,theyve tried puttin another cat on it but it didnt help,next was a lambda sensor but dealers want a 130 odd plus vat,really annoyin cus its only just over,spoke to a specialist they said try a ecu reset,that could work? runnin out of ideas now? any help would appreciated

 

forgot to mention its a 94 wrx import

 

I know this may not be much help but id try giving it a decent run (dual carrageway, parkway) and warm the car up before you take it for the emissions test I heard it can work. Also dont quote me but i think the cat works at its best when hot. Let us know how you get on with things best of luck.

 

Cat needs to be hot to be working at its best, however have read of this thread!

https://www.scoobynet.com/general-te...ue-no-cat.html

Hope that helps.

 

Aren't imports tested at a higher emissions since they don't have cats?

But as said, give it a good run to get it up to temperature.

 

any car from 1993 onwards needs a cat for mot.

 

actually thats a point they do still have cats but i think that up untill 1996 cars imported from japan for example can exceed UK limits by a mile. Im not sure why but i think its something to do with an agreement within the EU so japan does not apply.

 

import cats till 96 do have more leniancy than uk cars,have tried doin the warm up thing,the guy doin the testing is an ex rally driver so im sure he knows how to warm it up! lol
now there doin a diagnostics check as we spk to see if anythin pops it head on that aswell as resettin the ecu.

 

I see, thanks for clarifying guys.

 

good luck mate

 

I think if I've read the previous thread and vosa flow chart right you should be allowed up to 3.5% CO, that is the figure I remember testing to when I used to help out with MOTs on a saturday before cats were fitted. If your car still has the cats fitted and is not getting through then there must be something up there!

Have you asked the garage about wether it can be tested as a pre 96 import? They may not some accross this very often and may not know!

 

Had a chat with an MOT tester about this recently, seems that any car from 94 onwards now has to pass at .20% co or less.

Martyn

 

how did you get on mate?

 

Thats the thing with loop holes, some spoil sport comes along and closes it sooner or later

 

you can be tested on the non cat test, which if you were close before you should pass

http://www.motinfo.gov.uk/htdocs/m4s07000306.htm

 

What he said. Mine passed on the non-cat test last month.