RichardK
|
| posted on 19/3/11 at 07:50 PM |
|
|
Peugeot 106 CO MOT failure
Hi guys,
wonder if you could possibly help, my lads car just failed it's MOT on friday evening with these results:
CO 0.66% (Max 0.30%) FAIL.
HC 64ppm (Max 200ppm) PASS
Lambda 1.01 (0.97-1.03) PASS
We just gave the car a damn good service today that included changing the spark plugs, air filter, oil filter and oil. Went back to the garage after
giving it a blast up and down the motorway to get the cat nice and hot for a retest; however it is still reading high at 0.40%
The tester did give it a good go at trying to pass it for us but he suspects that the cat may be on it's way out. Any ideas guys? Would a fuel
additive bring it down enough to get it through, or do I just bite the bullet and buy a new cat for around £40. As it's a 1999 car it
doesn't have to be CE approved.
Cheers
Rich
Gallery updated 11/01/2011
|
|
|
|
|
iceman26
|
| posted on 19/3/11 at 07:58 PM |
|
|
had one in yesterday same fault have you cleaned the breathers out as these will put co over
that is what i did to get the car to pass mot
|
|
|
big_wasa
|
| posted on 19/3/11 at 08:04 PM |
|
|
The way I look at it is another £40 is cheap for another years mot.
|
|
|
RichardK
|
| posted on 19/3/11 at 08:05 PM |
|
|
Nah, didnt do that, would you be able to describe where they are??
Cheers
Rich
Gallery updated 11/01/2011
|
|
|
britishtrident
|
| posted on 19/3/11 at 08:11 PM |
|
|
Yes but I would also change the Lambda sensor and check very carefully for inlet maifold leaks.
It would be good to check the the Lambda sensor output --- I am willing to bet after 12 years it will be responding too slowly and drifted out of
calibration.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
mikemph
|
| posted on 19/3/11 at 08:24 PM |
|
|
High co can be rich mixture...but hc would generally go up aswell! Retarding the timing a few degrees can help alot to reduce emissions.
I'm not sure if you can do that on a 106 probably not I guess.
As the lambda is reading about right retarding timing would be good, but I guess the cat would be on it way out if it is very old.
Mike
|
|
|
froggy
|
| posted on 19/3/11 at 08:32 PM |
|
|
have a look at the cat ,if it has a flange all the way round its a cheap replacement that does well to last 2 years . from the figures and if the
tester tried hard to get the cat hot i would put a new one on 
[IMG]http://i144.photobucket.com/albums/r187/froggy_0[IMG]
|
|
|
RichardK
|
| posted on 19/3/11 at 08:54 PM |
|
|
quote:
Originally posted by froggy
have a look at the cat ,if it has a flange all the way round its a cheap replacement that does well to last 2 years . from the figures and if the
tester tried hard to get the cat hot i would put a new one on
Thats what he said, about 18 months tops for a non ce approved one or about 5 years for a ce one, ce one is 3 times the price though and my lad is
probably going to sell it in sept when he goes to uni so a non ce one would be ok.
Think I'll try a cat first, then lambda if no good.
Cheers gang
Rich
Gallery updated 11/01/2011
|
|
|
johny p
|
 posted on 19/3/11 at 09:04 PM |
|
|
come and see me pal.. ill sort it for ya....
|
|
|
RichardK
|
| posted on 19/3/11 at 09:48 PM |
|
|
quote:
Originally posted by johny p
come and see me pal.. ill sort it for ya....
Cheers buddy, I'll let you know how I get on..
Ta
R
Gallery updated 11/01/2011
|
|
|
DRC INDY 7
|
| posted on 20/3/11 at 01:00 AM |
|
|
The fault is the cat if you replace it with the cheap wash coat cats expect to replace it again come Mot time
https://www.facebook.com/groups/462610273778799/
Puddle Dodgers Club
|
|
|
loggyboy
|
| posted on 20/3/11 at 01:27 AM |
|
|
Disconnect the lambda, it will go in to a default mode and drop the mixture and runner leamer. Worked well on my redtop a few years ago when the
lambda was faulty. A new lambda solved it permantly but disconnecting it (at the sugggestion of the tester!) got it a pass.
Dont leave it disconected for long though!
[Edited on 20/3/11 by loggyboy]
|
|
|
RichardK
|
| posted on 20/3/11 at 09:28 AM |
|
|
Thanks chaps
Gallery updated 11/01/2011
|
|
|
