Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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ok my cars doing my nut in....
its a X14XE was running with a 4-1 manifold, sport cat and janspeed center and rear, did a emissions test on it when i put the cat on it and it passed after reving the nutts off it to super heat the cat but thats understandable..
now my mot is due and i put it in, well surprise surprise it failed on CO only on CO
now i took the sport cat off and put the origenal center and rear and cat back on the car and it has taken its Co reading from a very tree killing 1.3 down to a more placid 0.6 now i dont have the secondary air pump on the car as the manifold wont accomidate that... and the manifold has the lamda sencor on cyl 3 so i dought thats helping, now what im considering is that i should put the old manifold back on with the air pump, just wondering wether anyone thinks this will help as its going to cost me a fair bit in bolts....
just need to drop the C0 reading by 0.3 or more
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csweatherston
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Registered: 16th Jan 06
Location: Devon
User status: Offline
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stuff something (like a rag) in your backbox....
it'll stop the air from sucking back into your exhaust, should get it down atleast .3
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CORZA_2007
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Registered: 30th May 07
User status: Offline
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hi my car has just been through the mot and i had a problem with the emissions it had a FAULTY cat and lamda sensor.
have u had a look to see it's not your lamda sensor not faulty
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Superlite Ltd.
Member
Registered: 9th Jan 07
User status: Offline
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a small leak in the system will make CO fail
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TomSBD
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Registered: 22nd Jun 06
Location: Spalding, Lincs
User status: Offline
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a small leak will make the lambda reading fail.
try changing your oil if it hasnt been done in a while
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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The secondary air injection system wont help you im afraid, It doesnt do anything after the first 2 minutes and I never had a problem passing my MOT without it.
Lambda sensors are the most normal reason for failing the emissions, Had 2 fail myself so Id swap it with a mates if your tight, if not Id buy a new one
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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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oh well got a new lambda sensor comming and new Air intake temp sensor aiting for me at me local vauxhall dealer, costing me a grand total of £90.59 lets hope it passes now...... as my mot runs out half way through next week...
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Dean_W
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Registered: 13th Dec 05
Location: Downham Market, Norfolk
User status: Offline
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quote:
Originally posted by luke85
The secondary air injection system wont help you im afraid, It doesnt do anything after the first 2 minutes and I never had a problem passing my MOT without it.
Lambda sensors are the most normal reason for failing the emissions, Had 2 fail myself so Id swap it with a mates if your tight, if not Id buy a new one
Agreed.
I changed the CTS on my 1.6. That helped.
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ryan_fowler1985
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Registered: 27th Jul 05
Location: Trevethin, Torfaen
User status: Offline
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^ cts will make a difference, although the lambda shouldnt idealy be in cylinder 3 it should be on the part where all the gases are togther to read correctly
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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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yeah i know but whats really getting up my goat, is that the car passed not 6 months ago when i put my sport cat and manifold and center n rear on the car, and now its almost back to standard and it still don't like me, i changed the cts recently as the car was drinking fuel like it was going out of fashion, which cured that, but its still failing the co. Cars been serviced every 3k on the dot and the only other thing i haven't changed yet is putting a new set of plugs in it.
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Toby
Premium Member
Registered: 29th Nov 05
User status: Offline
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why you geting a new mot after 6 months
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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Lambda sensors have usually had it after 50,000 miles anyway, they become slow to react then fail altogether.
bosch recommend they will last 50,000km!
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Gareth F
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Registered: 16th Jan 08
Location: Location Location
User status: Offline
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The secondary air pump is totally useless in the country. Its only needed in countries where they test emissions from start of key so it pumps air in to the cat to heat it up quicker. You can just rip it out and put a blanking cap over the manifold. To be honest it just makes my exhaust pop like mad when its running 
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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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ahhh blody car, just put it through another emmisions test today, after putting a new lambda and AIT sensor on it, well it was saying fail for a fair time then the alues dropped and wahay it was passing the fast idal..... then you have to let it idel naturally so i did and the bloody thing failed by 0.025 not a happy bunny here, then i tryed doing the tests again and it was just failing everytime,,,,, i am taking the car to a different mot station tonight to see if its the machine..
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p1723944
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Registered: 4th Feb 03
User status: Offline
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Did it pass Richardhhha ?
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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well took it to me old work place, was reading worse there than it did at me new place.... decided its got to be the cat as when it gets hot it must be breaking down.
went euro carparts today and picked one up for £61.99 inc slapped it on after work today and regigged all the exhaust so it doesnt have clearance issues with the rear beam.. got to wait till tomorrow to put it on the analizer so fingers corssed it passes!!
because i dont have a clue what else it could be if it dont pass...
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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well done an emission test again and it bloody failed again, the hc is at about 175 the c0 went down to 0.24 which is great, the lambda was running at 0.988 minimum is 0.980 the hc is to high and it keeps pushing the c0 up so bearing in mind it has problems on motorway, where the car would pull fine then have no power, im thinking its a map sensor now, im getting pissed off with everyone at work keeps saying injectors or engine. God i am getting so fed up with it, also have got twin prong sp in at the mo they are 10,000 old so might change them and hope it works aswell.
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline
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Normally, the engine should pass the emissions test EASILY
Not just scrape through.
So yours does have a problem or two.
You dont have a FSE fuel regulator or anything fitted do you?
Did you change the cts?
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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changed the cts did nothing to emiisions, dont have a fse or anything like that.... im resetting the ecu so i can see if the car will relurn its factors as it did have a problem where it was cutting out going down motorway one day, hasemt happened since tho and there are no codes when i do a paperclip test,
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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well put the old exhaust manifold back on the car today, checked the plugs before i started it and they were black as night.
cleaned them up and took the car for a run about 30mile and they were just off tan which is ace..
now my big question if the fucker dont pass the emmisions test tomorrow im going to burn it!!
should do everythings running good and its back as standard.... hope it passes.
anyhoo whilst in me delvings under my bonnet i found this round back of engine wondering af anyone has any clue what the f it is..
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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That looks like the pug for the electronic speedo sender. Does your speedo work or has it been converted to cable?
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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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its a 95plate mate so had cable as standared.
would like digi speedo as then i can take my clocks out without the bloody hastle of taking the cable off the box.
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Richardhhha
Member
Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline
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ok did a emissions test on it yesterdaY lunchtime, and it passed woohoo now its booked in for today, so i should have my mot done at last
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DYL
Member
Registered: 19th May 06
Location: CAERNARFON
User status: Offline
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what if that test was just lucky? and it will fail on the MOT?
only kidding...good luck mate
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