cant seem to find where its coming from i have an S4 non turbo and everytime i start my car it starts fine but then it dies like less than 10 sec unless i keep the throttle open but once i let go it dies. there is this loud hissing noise coming from the throttle body intake mani area in between the three vacum hoses and the tps please help im thinking of replacing the whole top part of the intake mani but i want to make sure that it is that or if it is something simple so i wont buy the whole thing any ideas????

 

Well we cant rightly open your hood and find the leak for you. If you have an air compressor you can fabricate an adapter to attach to your intake. Then you can pressurize the system and listen for the hissing sound and track it down.

 

Take off your throttle body and do some digging.

 

Make sure the AFM connector is attached.