Bing Posted February 26, 2015 Report Share Posted February 26, 2015 Hi all,I have a problem with my 2001 (51, petrol auto) Lupo where it starts to judder/vibrate/shake/stutter after about 20 seconds of idling on a cold engine. It keeps stuttering for about 1 minute before it stalls. I can stop it stalling by holding the RPM's at 1500-2000 until the engine warms up (3-4 minutes). It's annoying and happens every single morning even when it's not that cold outside. I've heard it might be:Coil PacksAir Intake Throttle ValveSpark PlugsThrottle BodyI'm not technical *at all* and have been to local garages who have charged me £30 for an inspection and said "we'll need to keep it overnight and test fit new replacements of all those parts before we can make a judgement" - which they want £100+ for.Any help/ideas will be greatly appreciated.Kasim Quote Link to comment Share on other sites More sharing options...
Skezza Posted February 26, 2015 Report Share Posted February 26, 2015 Could be a dirty throttle body. If you've still got the car, give it a quick clean by spraying some carb cleaner down while holding down your throttle (as per how to).Could also be the lambda sensor. Quote Link to comment Share on other sites More sharing options...
grayoallan Posted February 28, 2015 Report Share Posted February 28, 2015 First things first - stay away from any garage that diagnoses a fault by replacing part after part, they are just guessing & you are paying for parts you don't need! Quote Link to comment Share on other sites More sharing options...
Dblock Posted March 1, 2015 Report Share Posted March 1, 2015 Where in the country are you? Do you have a laptop. Can you get your hands on vagcom or at very least a code reader. Check the codes. As skezza says it could be the lambda sensor. It's it's only being funny at a certain rev range it's odd. Usually but not always a coil pack will misfire all along the rev range albeit it could only be intermittent. Same with spark plugs. But I'd say you would be wise to Clean the throttle bodyReset the throttle bodyRead vagcom codes Replace or swap easiet things like coil and spark plugs ht leads etxReplace lambda. Quote Link to comment Share on other sites More sharing options...
Dblock Posted March 1, 2015 Report Share Posted March 1, 2015 Also you said the CEL is on. Get codes read and then you will know where to spend the money. Quote Link to comment Share on other sites More sharing options...
Bing Posted March 2, 2015 Author Report Share Posted March 2, 2015 Thanks guys wow so helpful! I'll try cleaning the throttle body (with help) and repprt back.Thanks alot Lupo-ers! Quote Link to comment Share on other sites More sharing options...
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