Douggie Posted May 15, 2012 Report Share Posted May 15, 2012 hi guys.i have recently got my lupo sport back from an engine rebuild... all internals are new, but accessories are still the same, ie coilpack, manifold, inlet, egr valve... had the car back and running fine for a week, haven't been over 3k yet, done aprox 250 miles so far. last night was in 5th gear, had foot down to accelerate and suddenly no power at all, and was running really lumpy and rough, i pulled over and turned the car off. when i then turned the car over, it was still running really lumpy... and i had EPC light... and a flashing CHECK light. i turned the car of, left it for 5 mins, turned it on and it ran fine but with a constant CHECK light. i went home straight away... went to check it this morning, and now it seems to be running even worse, as if its missfiring... the EPC light and Check light are both on. any idea what to do? it has new spark plugs...i know that coilpacks, ht leads and EGR valve could be a possibility... but just want some opinions before i buy all 3.. and then find out its nothing to do with it.any help is greatly appreciated! thanks. Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted May 15, 2012 Report Share Posted May 15, 2012 Start with the pack and leads Quote Link to comment Share on other sites More sharing options...
Piers Posted May 15, 2012 Report Share Posted May 15, 2012 take it back to who did the rebuild mate and tell them its playing up Quote Link to comment Share on other sites More sharing options...
JoeA Posted May 15, 2012 Report Share Posted May 15, 2012 for me it was coil pack, obviously i don't have a sport but i think its a problem for most lupos. Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted May 15, 2012 Report Share Posted May 15, 2012 Also given its a new engine you should be avoiding high load situations such as WOT in a high gear at low RPM.Im suprised they didnt replace the ignition system as a matter of course, given their fragile nature Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 15, 2012 Author Report Share Posted May 15, 2012 yeah so was i Defcon5. Coilpack changed, leads changed, spark plugs changed and EGR valve changed.... and still no joy... even more lumpy.... and now have EPC and a CONSTANT CHECK light on...this a job for autoelctician? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted May 15, 2012 Report Share Posted May 15, 2012 Get the codes read first off. Have you taken it back to the garage? Quote Link to comment Share on other sites More sharing options...
Silver! Posted May 15, 2012 Report Share Posted May 15, 2012 Timing belt slip\tensioner failing? I would go back and get it checked. Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 15, 2012 Author Report Share Posted May 15, 2012 will be going back on VAG COM at about 5 30... so il see what it reads then.it read Cylinder 2 misfire, Random cylinder missfire and something to do with manifold pressure... il see what it reads later...not took it back yet, i had the engine rebuilt at MANX in derby... but then the engine put back in lupo by my mechanic mate .... Quote Link to comment Share on other sites More sharing options...
Blaine Posted May 15, 2012 Report Share Posted May 15, 2012 ! Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 15, 2012 Author Report Share Posted May 15, 2012 i know blaine Quote Link to comment Share on other sites More sharing options...
Piers Posted May 15, 2012 Report Share Posted May 15, 2012 Manx are good mate. id suggest its your mate you need to talk too Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 15, 2012 Author Report Share Posted May 15, 2012 all my mate has done is put the engine in, thats it... that wouldnt cause a fault with the engine... plus its not really a 'mates job' it went to benze and was done properly so... untill i get the readings from vag com... i dont know... Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 15, 2012 Author Report Share Posted May 15, 2012 Right people... ran the car with VAG COM... it came up with ONE error. that was missfire in cylinder 1. i have checked the spark plug, it HAS a spark.it is getting FUEL....it HAS compressionand it IS still in time. have checked all the timng belts and pulleys.it has EVERYTHING it needs but it isnt firing... i am now beyond confused... any help? Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted May 16, 2012 Report Share Posted May 16, 2012 Is that with proper VAGCOM? Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 16, 2012 Author Report Share Posted May 16, 2012 yeah, it read codes like p1160 or somthing... but i just took the details down... Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted May 16, 2012 Report Share Posted May 16, 2012 What did it suggest was the cause? Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 16, 2012 Author Report Share Posted May 16, 2012 it just said Cylinder 1 missfire. there were no other errors.swaped spark plug with one we KNOW is working... still no joy.swaped injector... still nothingwouldnt be MAP sensor would it? or coolant sensor? Quote Link to comment Share on other sites More sharing options...
Silver! Posted May 16, 2012 Report Share Posted May 16, 2012 P1160 Intake Air Temperature Sensor Short To Ground. (Volkswagen) ...not sure if that helps at all, at all, at all. Quote Link to comment Share on other sites More sharing options...
truCido Posted May 16, 2012 Report Share Posted May 16, 2012 HT lead? Quote Link to comment Share on other sites More sharing options...
Douggie Posted May 16, 2012 Author Report Share Posted May 16, 2012 il look... and no, changed HT leads.... and tried ones working of my mates lupo... so ... Quote Link to comment Share on other sites More sharing options...
Lev Posted June 2, 2012 Report Share Posted June 2, 2012 Did you ever get to the bottom of this? Regards, Lev. Quote Link to comment Share on other sites More sharing options...
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