Setnev Posted December 2, 2017 Share Posted December 2, 2017 Need some help guys and gals. My 99 Outback is making this noise. It's coming from behind the passenger seat, kinda centered over the fuel pump region. In the video, I'm decelerating but you can clearly hear a hissing/metallic rubbing sound at a steady tone. Then I start to accelerate and then this sputtering/sucking on a straw in an empty glass noise happens. Engine performance is still smooth. I know for a fact it's not wheel bearings, transmission, or brakes because it's not speed or engine rpm related. What the hell is it? Link to comment Share on other sites More sharing options...
Brighton96 Posted December 2, 2017 Share Posted December 2, 2017 Just sounds like a vibration/rattle to me, not like something is broken. Link to comment Share on other sites More sharing options...
Setnev Posted December 2, 2017 Author Share Posted December 2, 2017 I was thinking either this or my fuel pump is starting to go. I'm leaning more towards fuel pump because if I hit bumps I don't hear the rattle. Link to comment Share on other sites More sharing options...
Brighton96 Posted December 2, 2017 Share Posted December 2, 2017 Being at rattley as subarus are, I tend to see them as very low importance problem, I will typically come across the culprit when I do other stuff to the car so I fix it when I come across it instead of spending hours trying to diagnose it. I don't know what dying fuel pumps sound like but I wouldn't just arbitrarily replace it unless it was showing signs of performance anxiety. Link to comment Share on other sites More sharing options...
Stevo F Posted December 2, 2017 Share Posted December 2, 2017 I tend tend categorize noises as annoying but harmless (i.e. loose exhaust shields) or something potentially significant. Have you checked to make sure something isn't loose down there? Link to comment Share on other sites More sharing options...
doublechaz Posted December 3, 2017 Share Posted December 3, 2017 I couldn't hear it in the clip. I don't think the fuel system could make a noise loud enough to hear down there without some driveability symptoms. When my fuel pump died years ago it didn't make any noise. Just suddenly not enough fuel pressure to keep the engine running. Whack with a tire iron after a bit of a rest got it to drive home again. I did hear a Peugeot fuel pump make noise. Made the kind of noise you would expect out of a bad bronze bushing type bearing. The dealer said don't worry about it on your 1500 mile road trip, just bring it by when you get back. Last random sentence: I don't think a football is a very good Christmas present. Link to comment Share on other sites More sharing options...
Setnev Posted December 4, 2017 Author Share Posted December 4, 2017 Yeah, I've checked the bottom end for loose bushings or joint, but came up short. Someone on facebook told me to check my e-brake to make sure there is no metal on metal grinding and the pads aren't worn on the back. Link to comment Share on other sites More sharing options...
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