2002 Audi A4
Problem for Audi 2002 A4

My 2002 audi a4 1.8t...somewhere in the vicinity




By leo2008 on Nov 11, 2009

" "
my 2002 audi a4 1.8t...somewhere in the vicinity of the passengers rear tire,i hear an air leak.its not the tire.i try to listen where its coming from exactly but can figure it out.its near the fuel filter seems like.only happens when the car is running.no check engine light and car isnt acting up.what could it be? thanks for any suggestions.
Comments:

Nov 11, 2009

- ok thank you i will do that tomorrow.now you mention rearr air ride.how do i determine if i have that and also with the fuel pump if thats what it is,is that normal for it to make that sound? thanks

Solution #1

posted on Nov 11, 2009
Not Rated)

redbeard00

Rank: Guru  Cars  Expert
Rating: 90%, 258 votes
I think you are hearing your fuel-pump. Try a few different things, with someone close to where you can hear the sound. Talk with that person. Ask if they can hear the sound with the car off, with the car in the run position(not running), and with the car running. Take notes, If the car has rear air-ride it could be an air leak. But it could also be the fuel-pump or an exhaust leak.
Comments:

Nov 11, 2009

- Normally if you never heard the pump before but you can hear it now. It could be that it is long over due for the fuel filter to be changed. Check your records and see when the last complete tune-up was done. But it could be that there is a lot of mileage on the car and the pump is tired and is now making a little noise. To answer your question about the air-ride, you can look in the owners manual, call the dealer with the VIN#, ask for service, and they will tell you, you can look behind the wheel and see if the shock has an air-bag combined with it or look for an air-bag in place of where you would traditionally see a coil spring mounted.
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