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Hi,
As always, first post here is because I have a problem.
I have a 1.6 THP 155 (Jan 2011) and it failed the MOT on, amongst a couple of other issues, the emissions. Very high CO and low Lambda.
I have serviced it (oil, filter, air filter, and spark plugs) and it has had a carbon clean (the high pressure Hydrogen into the intake; loads of crap came out). All this lead to the CO coming right down, and the Lambda going up (in one test the Lambda actually got to a passing value, just).
Last year it went through the MOT no problem.
I do not have access to a fault code reader currently and assume with modern stuff there is a cheat way of getting fault codes (I had an 1992 MR2 that you could use a paper clip in 2 of the diagnostic port holes and the EM light would flash the codes). It is getting a diagnostic check late next week, but thought I'd try and get a head start if I can.
Given the high CO %age and low Lambda I would guess it's running slightly rich. The chap in the MOT station said you could smell it, but I can't, although my sense of smell isn't that good, so maybe I just can't. I've also seen some discolouring of the plugs.
I've seen a couple of mentions of the O2 or lambda sensors here potentially being an issue. I'm sure I've seen mention of 2. Are they the same and just measuring the O2 in different places (pre and post turbo maybe?) and where are they? I can't find any decent diagrams of the engine so I can see where they are.
Don't shoot me, but the original MOT was at Mr Clutch as I did not think there would be any issues. It is now going to a local mechanic who I trust to look at, but he's booked up until next week.
Right now, I can't afford the trip to Leicester to get the walnut blasting done.
Any help appreciated as I'm skint and really need to get my car back on the road.
As always, first post here is because I have a problem.
I have a 1.6 THP 155 (Jan 2011) and it failed the MOT on, amongst a couple of other issues, the emissions. Very high CO and low Lambda.
I have serviced it (oil, filter, air filter, and spark plugs) and it has had a carbon clean (the high pressure Hydrogen into the intake; loads of crap came out). All this lead to the CO coming right down, and the Lambda going up (in one test the Lambda actually got to a passing value, just).
Last year it went through the MOT no problem.
I do not have access to a fault code reader currently and assume with modern stuff there is a cheat way of getting fault codes (I had an 1992 MR2 that you could use a paper clip in 2 of the diagnostic port holes and the EM light would flash the codes). It is getting a diagnostic check late next week, but thought I'd try and get a head start if I can.
Given the high CO %age and low Lambda I would guess it's running slightly rich. The chap in the MOT station said you could smell it, but I can't, although my sense of smell isn't that good, so maybe I just can't. I've also seen some discolouring of the plugs.
I've seen a couple of mentions of the O2 or lambda sensors here potentially being an issue. I'm sure I've seen mention of 2. Are they the same and just measuring the O2 in different places (pre and post turbo maybe?) and where are they? I can't find any decent diagrams of the engine so I can see where they are.
Don't shoot me, but the original MOT was at Mr Clutch as I did not think there would be any issues. It is now going to a local mechanic who I trust to look at, but he's booked up until next week.
Right now, I can't afford the trip to Leicester to get the walnut blasting done.
Any help appreciated as I'm skint and really need to get my car back on the road.
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