Don't really know whats going on

[greyspyder117]

OK here the story short and sweet. The other day going to work i started to hear a noise coming from the back seats. After getting to work i was found the noise to be just as loud outside the car on the passenger side. After thinking about it for a second i came up with the fuel pump.I know they aren't the quietest part in the world but i have been driving this car for about a year now and it was never this loud. I also then noticed that i can't boost. As soon as i start to get on the gas pedal and looking at my aem boost gauge at about 3 psi the car falls flat on it's face and starts to stutter real bad like fuel cut or something. Just wanted to get your guys input before i start to swap parts out.

 

[blizz99]

Have you checked the fuel pump? Maybe the seal on it is bad.

 

[pats16valve]

I would definitely look at the fuel pump as the culprit.

 

[greyspyder117]

You know i wanted to just swap ot the fuel pump seeing it's not that hard to do.. I am a tech at a VW dealership so all my good tools are at work but i have stuff at my house that can get me by. I don't have the wiring diagram yet for the GSX but i noticed somethig else and would just like to run it by you guys. When i turn my blinker on the tone of the fuel pump changes. Also i have ecmlik v3 is there anything i can log that would tell me the car is't getting the fuel it needs to boost. I did notice that when i really get on the gas pedal (a little bit more then half way) The aem wideband goes to 18.00 then gets the 3 lines that lets me know it's off the reading scale .. Any input would help

 

[bryanwheat]

If it is going lean and cutting out when you give it gas than you most likely have a pump on it's way out or the o ring on the top of the pump is bad.