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Found 3 results

  1. Hi all, How's things...? I'm new to this forum, so please forgive me if my issue is dealt with, but I have looked, but cannot find a specific reference. I have an engine issue that has been ongoing for months. I have replaced many consumer parts, which I have listed at the foot of this description... Engine / Car - 2.0 TFSI 211 bhp (CNDC I think) / A4 B8 S-Line Quattro Cold Start - Used to start without issue from cold, but has gradually deteriorated over several months, but is still not as bad as when Warm / Hot. - When attempting to start, the engine either turns maybe once or twice and fails almost immediately, or turns several times and after attempting to fire a couple of times, bursts in to life & runs without issues. - Sometimes the EPC indicator lights momentarily from cold start, flashing intermittently, but it usually does not from cold. If it does indicate then stopping and restarting the engine resets this, but I usually wait for the 'choke' to close. Hot / Warm Start - The engine is hardest to start when Hot or Warm, and is particularly difficult to start immediately after putting petrol in the tank; it doesn't matter how much, £10, £50 or full tank. - On rare occasions the engine starts without issue, maybe 1 or 2 in maybe 30 or 40 starts. - When attempting the first Hot / Warm start the engine turns maybe once or twice and almost immediately fails. -The 2nd, 3rd & sometimes 4th, 5th or 6th start attempt is the same. - The 3rd, 4th, 5th or 6th attempt can cause the engine to splutter for a short moment, but then fail. - The 4th, 5th or 6th attempt causes the engine to just turn over without fireing. I must then turn off the ignition in order to start the above process again. - When the engine does attempt to fire momentarily, depressing the accelerator brief sometimes causes the engine to burst in to life, but this is trial and error and does not always work; this could potentially be a red herring, but it feels real at the time. - When the engine does finally start, more often than not the EPC indicator flashes intermittently and causes the engine to intermittently misfire both when idling and accelerating. The only way to stop this is turn turn the engine off and immediately back on again, which clears the EPC issue. The engine starts without issue maybe 9 out of 10 times when following the last process. Parts Replaced - N80 / Evap Valve & Pipes - OEM (Mar 20) - PCV Valve - OEM (Oct 19) - Spark Plugs - NGK (Oct 19) - 4 X Coils - NGK (Oct 19) - Air Filter - Mann (Oct 19) Error Codes (TBC) - TBC - Camshaft Sensor - This was tested at a garage using VAG & I'm told this is ok. I tried an aftermarket sensor which demonstrates the same or worse symptoms. I am planning to buy a new OEM Sensor in a week or so. - TBC - A couple of other codes I think that about covers it. Please feel free to ask any questions and I will do my best to answer. Thank you in advance for your help & advice. Paul. :0)
  2. Hi Guys, New to this forum so please go easy on me :) I have read through posts with similar issues to what I am having and wondered if anyone can throw some light on it please? I have a A4 S - line Convertible 2007 2.0TDI which will not start when the car is hot, I will explain what I have done so far!! So in the morning the car starts fine, it drives perfect all the time and I get a good 50-60mpg no issues at all, about a month ago I parked up and went to move the car after an hour but it wouldn't start, engine turns over fine but no fire, so I had it towed home and in the morning I tried it again with a nearly flat battery and it started. Forward on a month and its now getting worse, I have read tons about this so changed the coolant sensor and fitted a new battery as the old one was a Moll from 2007 but its still doing it, if you start it and turn it off then straight back on it fires instantly but randomly it will not start if I go get fuel, shopping etc. Its been into a Audi specialist who cannot find a fault and it has been scanned many times and no codes are showing, I have no CEL either. Now if I leave the car for approx. 2 hours it will start, sometimes a bit longer than normal to start but it will go. I have seen issues with the starter motor but the garage says its not that as it turns over fine around 400 rpm iirc, they checked the Crank and Cam sensors and they work ok but I have seen on the net that A4's have a issue where the starter motor has some sort of heat sink issue, the Audi place wants it to go to a Derv Fuel specialist to check injectors etc. but I am reluctant as the car is perfect apart from the starting issue and they think its fuel related, they checked the fuel pump too and that purrs away nicely when you turn on the ignition. I have tried starting the car with the coolant sensor disconnected and it still will not start when warm. Any ideas? Sorry for the novel of a post haha
  3. My audi a3 fails to start when these dash lights come up. Any ideas what the problem could be??
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