FAILED emissions test

[pinola]

took the BRM for an MOT today all was fine apart from the emissin test :(

I made sure it was hot when i took it ;)

First idle test Co2 should be less than 0.30 and i got 0.61

2nd fast idle < 0.30 i got 0.58

Normal idle should be less than 0.50 i got 0.91

So it looks like i need a new cat :( i had it moted last year before putting the full jansped system on.

I got my sports cat and manifold 2nd hand from someone on themgzr forum I think and the cat back bits I got new from janspeed.

The only thing I can think of is it might be a sports cat from a 1.4 ZR thinking back I know the manifold and other bits are the same 1.4 to 1.8 but mabe the cats are different. Should have look into it more :(

Anyone recomend a good place to get a new sports cat or should I just go direct to janspeed again

[Adam]

Doh, sorry to hear that mate.

I went direct to Janspeed for my sports cat, can dig the part number out for you if you need it?

[Dom]

Can you look into it further? It might be something cheaper than having to replace the cat?

[andymlm]

I normally try an 'italian tune' to sort co readings like that!

A good thrash up the motorway before testing! seriously the cat can take time to get hot enough sometimes,

And leaving it idling slows the warmup process,

I have sorted quite a few cars with emissions problems and the number 1 culprit is the lambda sensor my local supplier does rover ones for around £40, (done quite a few since that problem with supermarket fuel!)

[pinola]

it was quite hot oil temp was 99oC when i put the exhaust on last year i put a new lambda sensor in mabe i could try it how do you know if it's that? the sports cat i got was 2nd hand and done about 12,000 miles i have added another 10,000 since then i know it should last longer than this. adam does your car pass by much or is it very close?

[Adam]

2 years ago I was 0.02% under, last year I was 0.01% under, got the next MOT tomorrow and to be frank I'm a bit worried. Will let you know how she goes though....

[gary87]

From Gary87, I had the same problem recently, and mine failed its MOT on emmision readings, and was told I needed the engine management system sorting and setting up. Took the car to a rover garage and it passed with no problem as quite simply the CAT was not hot enough to function properly.

[Adam]

Well she passed her MOT today. Got a slight brake judder from the front but its nothing I didn't know about so a new disc is needed, but onto the important stuff the emissions.......

Fast Idle
CO Level (Pass <=0.20) - Result 0.20%
HC Level (Pass <=200) - Result 39ppm
Lambda (Pass 0.97 - 1.03) - Result 1.02

Normal Idle
CO Level (Pass <=0.30) - Result 0.17%

So not bad all in all :mml:

[pinola]

Had the re-test today and..............

PASS :)

I had a new stainless steel sports cat welded in by my local powerflow exhaust dealer
total cost was £180 instead of the £280 if i had ordered a cat from janspeed.

the test

BASIC EMISSIONS TEST

Fast Idle
CO Level (Pass <=0.20) - Result 0.17%
HC Level (Pass <=200) - Result 27ppm
Lambda (Pass 0.97 - 1.03) - Result 0.99

Normal Idle
CO Level (Pass <=0.30) - Result 0.07%

That's the basic test they do on all cars but if it fails the basic test it will go into a 10 min test designed for you model of car.(the test I had last time) For the rover 200 1.8vvc these are the max levels so you still have a bit left for next year Adam :)

Fast Idle
CO Level (Pass <=0.30)
HC Level (Pass <=200)
Lambda (Pass 0.95 - 1.09)

Normal Idle
CO Level (Pass <=0.50)

[Adam]

That's good to know! :mml: