The Mitsubishi Pajero Owners Club®

K2EDG · Posted: Thu Apr 10, 2008 22:38 Post subject: Cats??

Hi all.

My question is fairly simple, i have a K reg 3.0 petrol uk shogun and have just had the engine rebuilt, in the proses they have damaged my exhaust SO.. i'm thinking of getting a Stainless system made for it. Now they have asked if i want it with or without Cat (there is quite a price diffrence so if it will pass an MOT without and run of i would like to go that way?

What do you think? would it pass an MOT with no cat fitted? or is it just not worth the chance its going to fail?

Cheers..

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markppearson · Posted: Thu Apr 10, 2008 22:52 Post subject:

depends how ur ecu is set-up, ie Lamba sensors are used to monitor the emissions an then the fuel/air mix.

nick the nurse · Posted: Fri Apr 11, 2008 3:55 Post subject:

Keep the Original Cat and ask them tomake the 'zorst with a detachable bit where the Cat should sit ......come MOT time put the Cat back on ............but when they make the exhaust for you ..you MUST have the first sensor ..or it will play Havoc with the ECU and Lamda sensor

HTH Wink

buffalos neph · Posted: Fri Apr 11, 2008 7:59 Post subject:

hi what year is the car because any car before 1993 k does not need a cat anthing after needs to have a cat mot requirements

matt Laughing

K2EDG · Posted: Fri Apr 11, 2008 18:59 Post subject:

K2EDG · Posted: Fri Apr 11, 2008 19:01 Post subject:

nick the nurse · Posted: Sat Apr 12, 2008 4:11 Post subject:

Front of the Cat just after it joins from the down pipe .second one is at the back of the Cat Wink

K2EDG · Posted: Mon May 12, 2008 18:00 Post subject:

bit of an update, I had the Exhaust made and fitted and all was well...... the next bit your going to love, MOT day... Forgets all about not having a cat fitted so it fails on emitions , Ok so i go home and put the cat on and give it some stick down our local duel carriage way then i dropped it back with them. So it fails again!!

So now i admit there was some panicing going on and lots of reading. i've run some engine flush through it and changed the oil (plus plugs etc), put some injector cleaner in it, and given it some more stick Smile

But i'm now thinking maybe the Lambda sensor?? or something like that?? (i've always thought the exhaust smells like its running very rich)

I have to admit though i'm feeling really sick. i've spent twice what the things worth and now i can't even get it through an MOT.

cssuk · Posted: Mon May 12, 2008 20:15 Post subject:

lambda sensor wifes vtech did the same that has no cat either or the cats fubared does it rattle when shaken? btw if you have lpg wont need a cat mines a 4.2 patrol with lpg full 3" stainless custom made no cat and 0 emissions :D

K2EDG · Posted: Mon May 12, 2008 21:36 Post subject:

I can say for sure its not the cat. i had a hiflo cat made up today by the guys who did my Stainless exhaust (was planning on leaving it on)

Anyway that didn't help?

This is the last Emitions print out.

cssuk · Posted: Mon May 12, 2008 22:04 Post subject:

i would say lambda or cold start circuit is pooped lambda tends to bring the check light on

K2EDG · Posted: Mon May 12, 2008 22:05 Post subject:

I was just putting away some of the receipts and noticed that this car had a new cat just before i got it? (the MOT before i bought the car) which is really weired as the Exhaust guys said that is was in poor condition (lots of carbon build up)

So i guess i'm going to fit a new 02 sensor. I think it would benefit from a set of plug leads (its got cheap and nasty hot wire ones on) but it idles ok? so that may not be the cause.

BTW i have just read that an OE Lambda sensor is £400 from Mitsubishi Shocked

so i'm thinking about getting a Universal one, But out of interest is all Lambda sensors the same? (as long as they have the same number of wires) i only say this as i have a few Vauxhall four wire sensors? could one of those be tweaked to fit?