oldmandon 1 Posted January 31, 2012 Report Share Posted January 31, 2012 Well the car failed it's MOT today.... Apparently the front wheels were put on the wrong way as the tyres are directional..NOT by me I might add, second the handbrake cable is shot, needs a newun, Third the nearside sidelight is poor...might have something to do with cracked lens and water ingress...not bad so far.......Fourth...emissions failed....this is the problem now....despite what we tried, the emissions just wouldn't come down....not sure what to do now....... Link to post Share on other sites
legvw 0 Posted January 31, 2012 Report Share Posted January 31, 2012 Give it a good service, that usually helps. If not you might need to replace the cat. Link to post Share on other sites
Ben Seabrook 4 Posted January 31, 2012 Report Share Posted January 31, 2012 Yeah as above oil change filter change and before your retest give it death on the way there Link to post Share on other sites
rodney 17 Posted January 31, 2012 Report Share Posted January 31, 2012 Like above.... there are a few options to look at. Cheaper to more expensive as always.All filter changes and cleanedcheck/change Oilcheck/change Plugscheck/change Lambdaand a good thrash and a sustained steady run on a motorway at normal motorway speed for 30mins or so to clean out the pipes systems etc (on decent fuel)Then kick - sorry look at the CAT and injector cleaning.After that........Get a loan and charge/turbo it or purchase an R32. (mine ran very low emmissions once F.I.) Link to post Share on other sites
russj249 2 Posted January 31, 2012 Report Share Posted January 31, 2012 Bottle of red x injector cleaner and a good blast loads of cars fail at my place on CO, I'd imagine that if this was the case, expect to see a CO reading of between 0.5 and 1.0, normally it won't take long to get it under the 0.2 limit.Get them to hold the revs up at 4k if its still failing to get the cat super hot, then when it drops into the green, drop the revs to between the 2.5k and 3k limits. Works 9/10 times from my experience Link to post Share on other sites
CALICO 130 Posted January 31, 2012 Report Share Posted January 31, 2012 Go to a more friendly garage and get them to stick the tested up the behind of someone elses car lol Link to post Share on other sites
jws vr6 0 Posted January 31, 2012 Report Share Posted January 31, 2012 What were the readouts on the emmissions printout, can usually get a good idea from that whats up? CO reading up to about 0.8 or 0.9 % is usually a nakered cat, can sometimes be fixed as above with some fuel additive an a good thrash.Anything above that an more likley a 02 sensor or MAF or plugs etc.If it failed on the lambda reading its usually just a small leak in the exhaust somewhere.Have a look on the printout and post up the readouts. Link to post Share on other sites
oldmandon 1 Posted January 31, 2012 Author Report Share Posted January 31, 2012 CO2 reading was 1.088...YES thats right 1.088HC reading was 0.2Lamba reading was 0.97The lowest CO2 reading was 0.479, as that went down, the Lamba sensor reading went up into the red....... Link to post Share on other sites
jws vr6 0 Posted January 31, 2012 Report Share Posted January 31, 2012 May be a catalyst but seems a little high for that. Was the CO fluctuating a lot while they were doing the test. It will usually go alot higher than 1 if theres a dodgy sensor. Link to post Share on other sites
Lukey. 381 Posted February 1, 2012 Report Share Posted February 1, 2012 Mine had sky high co2 readings and it was the maf.Rather than redex get a bottle of comma d-tox, brilliant stuff Link to post Share on other sites
paceo 22 Posted May 2, 2012 Report Share Posted May 2, 2012 What were the readouts on the emmissions printout' date=' can usually get a good idea from that whats up? CO reading up to about 0.8 or 0.9 % is usually a nakered cat, can sometimes be fixed as above with some fuel additive an a good thrash.Anything above that an more likley a 02 sensor or MAF or plugs etc.If it failed on the lambda reading its usually just a small leak in the exhaust somewhere.Have a look on the printout and post up the readouts.[/quote']my vr6 is 0.80 co with a de-cat if that sounds right?? Link to post Share on other sites
BrianHouston 0 Posted May 2, 2012 Report Share Posted May 2, 2012 Take a trip to Northern Ireland for your MOT I'm de-cat a pass fine on emissions there, but they are strict on everything else Link to post Share on other sites
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