big_dave Posted March 18, 2006 Report Share Posted March 18, 2006 righhht after months of the car being at garages still no sucessapparently its puttin out 10% Co2 emmissions and no one can tell me whylambda probe has been changes and so has the temp sensor still its burning fuel like theres no tommorowi get 3-4 miles on a fiver.... style="vertical-align:middle" emoid=":blink:" border="0" alt="blink.gif" /> theres black smoke comin out the exhaust while its idling even tho its just had its 60k service and star say it may be the ecu sendin out wrong signals or summinam at a loose end and the bank balance is starting to go up in a puff of black smoke also.any ideas!?!?ta. Quote Link to comment Share on other sites More sharing options...
paulbin Posted March 18, 2006 Report Share Posted March 18, 2006 id put my money on the ecu Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 can any1 point me in the direction of a motec ecu/engine management system Quote Link to comment Share on other sites More sharing options...
Red Lup Gti Posted March 18, 2006 Report Share Posted March 18, 2006 why u want standalone?? get another 1 litre ecu fired on it!! standalone for a 1l is a waste of money. Quote Link to comment Share on other sites More sharing options...
Arun Posted March 18, 2006 Report Share Posted March 18, 2006 lupo breakingany bits you might need Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 (edited) why u want standalone?? get another 1 litre ecu fired on it!! standalone for a 1l is a waste of money.whos got a 1litre like????? style="vertical-align:middle" emoid=":confused:" border="0" alt="confused.gif" />if u looked at currently drivin ud see i have a sport.... style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> Edited March 18, 2006 by big_dave Quote Link to comment Share on other sites More sharing options...
Snoopy Posted March 18, 2006 Report Share Posted March 18, 2006 (edited) id put my money on the ecuI wouldn't. ECU failure generally results in the car not working, it's extremely rare for the ECU to fail to the point where it's running badly but still running.Far far more likely to be one of the sensors giving a bad reading to the ECU.I'm not saying it couldn't be the ECU, just extremely unlikely to be. Do you know anyone else with a Sport that you could swap ECUs with for an hour? It's a lot of money to spend if it makes no difference.If you take it to a decent VW specialist they might have a better chance of finding the problem... Edited March 18, 2006 by Snoopy Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 (edited) I wouldn't. ECU failure generally results in the car not working, it's extremely rare for the ECU to fail to the point where it's running badly but still running.Far far more likely to be one of the sensors giving a bad reading to the ECU.I'm not saying it couldn't be the ECU, just extremely unlikely to be. Do you know anyone else with a 1.0 Lupo that you could swap ECUs with for an hour? It's a lot of money to spend if it makes no difference.If you take it to a decent VW specialist they might have a better chance of finding the problem...sorry but i DONT have a 1litre lupo!every sensor has been checked lolits been into vw asell and put on the pc thing no faults were recorded so im stumped Edited March 18, 2006 by big_dave Quote Link to comment Share on other sites More sharing options...
Snoopy Posted March 18, 2006 Report Share Posted March 18, 2006 Never said you did. *cough* style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />Is the engine warning light on?If it isn't, how sure are you that they changed the lambda sensors? I can't see how the engine check light *wouldn't* be on if it's running that rich and the lambda sensors are working... Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 no lights on and it has been changed cos the old one is in my boot and up for sale on here.... tuff one guys Quote Link to comment Share on other sites More sharing options...
Snoopy Posted March 18, 2006 Report Share Posted March 18, 2006 Is there only one lambda sensor on the Sport? Most cars have two. (Never owned a Sport so don't know...) Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 (edited) i have no idea the only changed one thats for sure.....if it aint the ecu thn ive got no idea whats wrong but its running very badlybut its still as quick and u wudnt know apart from the fuel consumption and smell.... Edited March 18, 2006 by big_dave Quote Link to comment Share on other sites More sharing options...
andyp Posted March 18, 2006 Report Share Posted March 18, 2006 (edited) gti has two doesnt it?? one in engine bay and then one near exhaust... if its chucking out black smoke...overfuelling obv...isnt there things like ghost faults... that dont actually show up on the ecu..?? so seeing as the sport is very much similar, would have thought two on as well... just a though Edited March 18, 2006 by andyp Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 18, 2006 Author Report Share Posted March 18, 2006 surley vw wud know this wudnt they so they wud have replaced both and not just one....? Quote Link to comment Share on other sites More sharing options...
one litre wonder ;) Posted March 18, 2006 Report Share Posted March 18, 2006 overfuellingclogged injector ?? there sticking open ??? Quote Link to comment Share on other sites More sharing options...
Snoopy Posted March 18, 2006 Report Share Posted March 18, 2006 Could be, but the ECU should detect that and put the check engine light on. However, if one of the lambda sensors was knackered, the ECU could believe it was doing the right thing by putting that much fuel in.It is typical of a lambda sensor failure, but I am surprised VW didn't change them both. style="vertical-align:middle" emoid=":unsure:" border="0" alt="unsure.gif" /> Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted March 19, 2006 Report Share Posted March 19, 2006 Throttle body was to blaime when Noddy's had this problem.Once changed it was still over.New engine solved it in the end.Edit.He doesn't drive a 1.0 either style="vertical-align:middle" emoid=":P" border="0" alt="tongue.gif" /> Quote Link to comment Share on other sites More sharing options...
bossjohnc Posted March 19, 2006 Report Share Posted March 19, 2006 New engine solved it in the end.There you go then, problem solved!Anyone got a part number? Quote Link to comment Share on other sites More sharing options...
Tigz™ Posted March 19, 2006 Report Share Posted March 19, 2006 (edited) Hey, a couple of hundred quid Sport engine is cheaper than VW 'Test it and see if it works' approch style="vertical-align:middle" emoid=":P" border="0" alt="tongue.gif" />Noddy had spent close to a grand with VW telling him it needed this and that.I gave him a TB as the £XXX price was silly.If he'd had to buy one (which didn't fix it by the way) it would have been over a grand. Edited March 19, 2006 by Tigz Quote Link to comment Share on other sites More sharing options...
Red Lup Gti Posted March 19, 2006 Report Share Posted March 19, 2006 tbh tho, i would start all over again. Only real way you can do it is if you get another 1L parked next to your's and just swap each sensor over till problem is cured. could be anything, air flow sensor, lambda, knock sensor who bloomin' know's mate? we can only kinda guide you tbf. ( was just teasing bout the 1L thing but what i said still applies!) Quote Link to comment Share on other sites More sharing options...
big_dave Posted March 19, 2006 Author Report Share Posted March 19, 2006 tbh tho, i would start all over again. Only real way you can do it is if you get another 1L parked next to your's and just swap each sensor over till problem is cured. could be anything, air flow sensor, lambda, knock sensor who bloomin' know's mate? we can only kinda guide you tbf. ( was just teasing bout the 1L thing but what i said still applies!)new engine didnt think it would be tht bad style="vertical-align:middle" emoid=":blink:" border="0" alt="blink.gif" /> Quote Link to comment Share on other sites More sharing options...
tshirt2k Posted March 19, 2006 Report Share Posted March 19, 2006 Really you need to get someone who has an idea how to use Vag com. The Newer version gives you an idea of what the correct readings should be of all sensors etc. I Would never give my car to a stealer. They aint got a clue. Could be something as simple as a coolant sensor but without diagnostics you are clutching at straws.A mate of mine has an A2. Had a fault saying EGR valve short to ground and the ECP light was up. Went into Audi who changed EGR Valve and brake light switch . Still the same. I Thought I'd have a go, with the help of ELSA and Vag Com (Proper Version). Traced it down to the Oil breather Heater. Which was short circuited. Causing the fuse supplying the associated part to keep blowing.Vag com doesn't have this as a fault, but the heater is part of the same circuit. Quote Link to comment Share on other sites More sharing options...
chrisb Posted March 19, 2006 Report Share Posted March 19, 2006 Have you tried the fuel pressure regulator? Quote Link to comment Share on other sites More sharing options...
LoopyLing Posted March 19, 2006 Report Share Posted March 19, 2006 We just had our injectors replaced (1.4 non-sport) 'cause it was cutting out.. Surely clogged injectors would be under fuelling? Quote Link to comment Share on other sites More sharing options...
Fafnir Posted March 20, 2006 Report Share Posted March 20, 2006 We had a problem just like this for nearly a year. The car was put on Vagcom and showed no faults... but failed the MOT with terrible emissions. The garage changed sensor after sensor with no luck, compression tested the car etc etc. They changed the Lambda, MAF, Fuel pressure regulator, oil separator, we had the plugs, coil pack and HT leads changed. There were a few improvements, but not sufficient to pass the MOT. In the end they changed the ECU for a second hand one, and hey-presto - all emissions OK and passed the MOT.The car was still running reasonably in the meantime.Good luck - its been a long journey for us, but there in the end.Ours is a Lupo Sport, 6 years old, 77K miles. Quote Link to comment Share on other sites More sharing options...
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