993Turbo4 Posted January 17, 2011 Report Share Posted January 17, 2011 I was driving home tonight and my 1.4Tdi Lupo went all lumpy as if it was out of fuel (which it wasn't)and then stalled...I then noticed the fuel pump wasn't making any noise as I turned the ignition.I checked all the fuses including fuse no. 40 (fuel pump) no joy....just had to get RAC towed home Does anyone know what may be up...Does the fuel pump have any other breakers / relays / fuses or resets? Is it driven by the ECU?Any help would be great.CheersGareth Quote Link to comment Share on other sites More sharing options...
jon_273 Posted January 17, 2011 Report Share Posted January 17, 2011 Could be the 109 relay. Google it, it's a common problem and there's lots of information out there. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 22, 2011 Report Share Posted January 22, 2011 TDis dont have the 109 relay. Quote Link to comment Share on other sites More sharing options...
jon_273 Posted January 22, 2011 Report Share Posted January 22, 2011 LOL! Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 22, 2011 Report Share Posted January 22, 2011 Having basically the same problems on mine , looks like its probably the immobiliser or the ecu tbh.Mine had just been sitting for ages though , new battery on and nothing , no pump no injectors etc etc 12v to the pump fires that over but no injectors so wont fire properly. Quote Link to comment Share on other sites More sharing options...
jon_273 Posted January 22, 2011 Report Share Posted January 22, 2011 Well the 1.4 TDI has a relay which controls the ECU, and the fuelling. It is known to fail (I personally know 2 people who've had it happen to them). One of the symptoms is that the engine will turn over but not start, almost as if there is no fuel getting through.The relay does not usually log a fault code.The immobiliser will normally let the car start and then cut the engine after about 1 second. It will log a code with the description "Engine start blocked by immobiliser". Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 22, 2011 Report Share Posted January 22, 2011 So whats the number of this relay ? Quote Link to comment Share on other sites More sharing options...
Rich Posted January 22, 2011 Report Share Posted January 22, 2011 The TDI mk2 I'm using atm has a 109, I even have a spare for you Scotty if this turns out to be it. However if it is immmobiliser based then my offer still stands to code a different transponder box and key into your ecu. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 ill see if i can pick up another key and transponder rich, would the relay be based under the dash behind the fuse box? Quote Link to comment Share on other sites More sharing options...
jon_273 Posted January 23, 2011 Report Share Posted January 23, 2011 Number is 601 if looking at it upside down. Quote Link to comment Share on other sites More sharing options...
Rich Posted January 23, 2011 Report Share Posted January 23, 2011 Scotty, if you remove the plastic undertray, you'll see two screws which hold the transponder box in place but I would try the relay first. They're behind the fusebox in a drop down white plastic thing. Easyish to get to. Quote Link to comment Share on other sites More sharing options...
Mitchell Posted January 23, 2011 Report Share Posted January 23, 2011 nicola's lupo is now at addington after it failed to start on her friday night, it drove home , then after a shower she tried to go out, no glow plug lights,no fuel pump, tried 3 different fault code readers and none of them are registering the ecu, and i bought a new 109, 601 upside down, to no avail. i am thinking ecu tbh. we shall see Quote Link to comment Share on other sites More sharing options...
Mitchell Posted January 23, 2011 Report Share Posted January 23, 2011 just to add i99y had this and was it not a burnt out track in the ecu? Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 (edited) weird how mine done this and wasnt been driven ,it had been sat in the garage unused for months before i stuck on a charged battery and nothing worked.Rich if its not the relay would i just be able to get another second hand key and transponder and use the chip part of the key into my key and code them all together to my ecu ?Or is there another way of doing this ?Mitch the ecu being the most expensive option im trying the cheaper ones first, fingers crossed it isnt the ecu though.BTW when i went to vw the 109 relay comes up on the system for my reg but is greyed out as if to say the car doesnt have one, then next to it also greyed out is the cars its used on and it has 3L tdi. Edited January 23, 2011 by scotty_82 Quote Link to comment Share on other sites More sharing options...
Rich Posted January 23, 2011 Report Share Posted January 23, 2011 Okay, the key chip is coded to the transponder box, the transponder box is coded to the ecu through vag com. It's just a case of getting a key and box then going through vag com to code it in. The chip from the new key can be placed into your existing key with minimal effort.The same goes if you have to replace the ecu, you can pick up a coded ecu without the transponder which makes it cheaper and I'll just code it in to your existing key and box. The golf mk3 key and chip is the same as the loop and they're fairly common so that makes it easier. If you're wondering, I worked out how to do this when I built the VR cab. The key was missing so I just coded the ecu to the 2.0 8v key and box, been in daily use now for a few months and all is spot on with it. Mitch, same applies. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 LEG-END Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 Just spoke to my bro and i think he is breaking his mk3 abf so i might have his key and transponder.Only other problem is there could be a possibility it could also be the toad/sister company alarm i have on the car, could that be cock blocking everything? Quote Link to comment Share on other sites More sharing options...
Rich Posted January 23, 2011 Report Share Posted January 23, 2011 The abf stuff would be spot on. Is it turning and just not starting ? If you want the aftermarket alarm system removing that's actually a pretty easy job, just trace it back and remove the connections into the ignition circuit. Basically just remove it wire by wire reverting it all back to standard. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 Yeah it was turning but no fuel pump, no injectors and im not sure if the glows were heating . Quote Link to comment Share on other sites More sharing options...
Rich Posted January 23, 2011 Report Share Posted January 23, 2011 Well, we'll remove the alarm and try that, then relay, then code in a new chip and transponder, then if that hasn't worked you can find a new ecu or borrow one, code that in and all should be good. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 (edited) Edited January 23, 2011 by scotty_82 Quote Link to comment Share on other sites More sharing options...
Mitchell Posted January 23, 2011 Report Share Posted January 23, 2011 rich none of the code readers can locate her ecu. Quote Link to comment Share on other sites More sharing options...
scotty_82 Posted January 23, 2011 Report Share Posted January 23, 2011 I havent tried a code reader on mine yet , will tomorrow night though, ill let you know if it reads mine. Quote Link to comment Share on other sites More sharing options...
Mitchell Posted January 23, 2011 Report Share Posted January 23, 2011 rich pm me your number Quote Link to comment Share on other sites More sharing options...
Rich Posted January 23, 2011 Report Share Posted January 23, 2011 vagcom, laptop, says unable to connect with engine block ? Quote Link to comment Share on other sites More sharing options...
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