Hey guys new Audi owner here and am really psyched about this cars potential. However, that being said, after only 2 months of ownership my new to me Audi S4 leaves me stranded on the side of the road. Granted I only did a small amount of research on the car but most of what I read I liked and it sounded like a fairly reliable engine. I used to be a tech for Nissan and anything is better than their 2.5 oil eaters. Being a mechanic, fixes are easy but for those who are not experienced or mechanically inclined getting stranded on the side of the ride when your car shuts off in the middle of driving for seemingly no reason can be a scary process.
I called AAA to have the car towed and while waiting decided to check a few things. I find out that these fuel modules above the tank fail quite frequently and produce my exact symptoms. Ripped the rear seat out and messed around back there only to have the car start on me literally 2 minutes before the tow truck gets there. Got it home on my own thankfully as nobody wants to tow a lowered audi on 19's especially when the tow truck driver has no planks to prevent the front bumper from ripping off. Anyways long story short most of what I read and could find for information about replacing the fuel pump module was kindve vague and wasnt definitive on whether or not it can be replaced without having to drop the tank a little or at least removing the collar and fuel pump to get it out of the way.
Well neither of those were things I wanted to do and I am happy to report that you dont have to! I really wanted to relay to anyone on here who has had or is having this same issue that the module is 100% replaceable without doing either of those things. It is a tight fit and the module is quite large but once you remove the 2 screws holding the module to the metal under the seat, with a little persistence and persuasion the module will come right out. You barely have to bend the metal at all. Once it is a quarter of the way out use your hand to pull up on the rim and the whole piece will bow up enough to get the module out. This will prevent you from using a pry bar and damaging or misshaping the metal to the point of no return. It will also prevent you from using a pry bar on the tank for leverage and puncturing the fuel tank which is probably the worst thing you could do and apparently has actually happened per my friend who is a seasoned Audi tech.
When I have some more time I will post up the pictures I took of the process but so everyone is certain, the job is very easy. Honestly the hardest part for me was getting the bottom part of the rear seat out. Not sure if there is some trick or something but the white clips both broke on me when pulling it up. Aw well, they are very cheap to replace. Anyways, thanks for reading my mini rant and I hope to be a productive member here! Thanks guys!
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Originally Posted by maksym
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