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-   -   2001 a4 1.8t starting problems (https://www.audiforums.com/forum/b5-models-69/2001-a4-1-8t-starting-problems-167141/)

patrixx006 04-09-2011 02:47 PM

okay i replaced the fuel filter..... now i have to wait a couple of hours to see if it will start or not.

patrixx006 04-09-2011 02:49 PM

oh and by the way it was the original fuel filter, and i have 167xxx miles and the old gas inside of it was black...

patrixx006 04-09-2011 03:59 PM

ok so that didnt fix it any other ideas?

fastcompany 04-09-2011 07:27 PM

sorry bud. it gets hard from here if i can't actually work on the car. is your car by chance a 2.8? this is weird and i blame it on leaky injectors but a few of the cars i work on have this issue. you need to hold the gas pedal to the floor when you start it. this is clear flood mode. the injectors will not fire. its only on the 2.8's i've seen this issue and i will have to go to someones house becuase their audi wont start and the pedal to the floor fires it right up. after someone see's that they dont really care to have anything fixed because its easy enough to remember to do that.

patrixx006 04-10-2011 12:33 AM

No its a 1.8 and it doesn't help if I floor the gas I might just buy new injectors but if I do that I want upgraded ones...which ones should I get?

patrixx006 04-10-2011 04:29 PM

just had a thought... i have a testpipe and it throws a code, could it be that the o2 sensors are making it run to rich and making it hard to start? just a thought let me know if thats possible

patrixx006 04-12-2011 11:55 PM

Ugh guess not

mwaterman 04-13-2011 09:20 AM

Why dont you take a pair of vise grips and pinch the fuel return line off from the fuel rail and see if that makes it start easier and run better, by doing that it can build more pressure and itll narrow it down to a pump or fpr. just a thought..

patrixx006 04-26-2011 08:45 PM

soo im about to give up and take the car the shop which i really dont want to do, any one have any ideas????!?!?!?! i used a duralast temp sensor would that make a difference? somone pleaaaaaaaase help!!

ImTheDevil 04-26-2011 09:39 PM

Did you try pinching the return line like it was suggested? And no, that code won't do it - that's the post-cat O2 sensor which has nothing to do with fueling.

Gotta calm down man - freaking out in your posts tends to annoy people and just turns them away. Have you been researching fueling/starting problems in general? Or just waiting on feedback here? A lot of information is out there (like what a post-cat O2 sensor does) that applies to all vehicles including the 1.8T you drive.


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