Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: ffcgary1 on 19 April 2008, 19:47:55

Title: emissions
Post by: ffcgary1 on 19 April 2008, 19:47:55

Good evening all
 I have a pal who is not online that has a 3.0 v6 and it has failed the emissions test on the MOT today, the print out says

1, Exhaust emissions carbon monoixde content at idle exessive
2, Exhaust emissions carbon monoixde content AFTER 2nd fast idle exessive
3, Exhaust emissions Hydrocarbons after 2nd fast idle exessive
4, Exhaust emissions lambda reading after 2nd fast idle outside specific limits.

Can any body tell me what these mean, and does it mean the cats are fooked.

Or is it something silly that has failed. ::)

I await with baited breath. Good health to you all.

Title: Re: emissions
Post by: Andyb on 19 April 2008, 19:49:45

i think it might be the lambda sensor giving faulty signals to the ecu

Title: Re: emissions
Post by: ffcgary1 on 19 April 2008, 20:24:22

Thanks andy for your thoughts, will hopefully get some more feedback to back you up mate. :y

Title: Re: emissions
Post by: Lazydocker on 20 April 2008, 11:00:34

I'm not going to promise this will work but...

I normally get cars to pass emissions by giving a full service (including plugs) and sticking some injector cleaner through when there's only about quarter of a tank. Then drive it like you stole it!  ;D ;D ;D

Go straight to the test station and do not switch off until the test is done!

9 times out of 10 i find this works, unless you have serious engine management issues!

Title: Re: emissions
Post by: Marie on 20 April 2008, 11:06:40

have you given the car a good ragging before the test.

Loads of short journys dont help the cat. a good blow out of the cat will help it. ( well not litterally)

just take the car for a good blast, and as lazydocker has said a service normally helps to. when was it last done?

Title: Re: emissions
Post by: Kevin Wood on 20 April 2008, 11:16:31

The lambda value being wrong does suggest the fuel mixture before the cat is not right. Has he got any trouble codes stored?

Kevin

Title: Re: emissions
Post by: ffcgary1 on 20 April 2008, 17:30:45

The car has just had a full service including timing belt kit and oil/filter change/plugs/air filter and leads but not the fuel filter, although i dont think that will affect the emissions. could it be the lambda sensors or even maf?.  Fuel consumption is down as well. ::)

 i will try and get the codes read this week., the eml is not on.

Title: Re: emissions
Post by: Auto Addict on 20 April 2008, 18:32:45

Thermostat? not getting up to temperature?

Title: Re: emissions
Post by: ffcgary1 on 20 April 2008, 19:36:40

Running temp is 92/95 so that is ok. :y