twisted Posted August 17, 2009 Share Posted August 17, 2009 So I had the SPT intake on for a while and got sick of the noise and the slightly lower gas mileage and switched back to the stock airbox. Now I noticed I have some humming noise when I go at 30mph or above. I never had that before. I re-checked all fittings and all is in order. I do have Lachute catless and crucial catless and it could be an exhaust gasket going but normally when a gasket goes the noise is there throughout and it gets really loud the higher the speed. I know bad exhaust gaskets and this does not sound like one. Could it be wheel bearing since this sound only comes at 30mph and above and doesnt increase in loudness with throttle? Link to comment Share on other sites More sharing options...
donut Posted August 17, 2009 Share Posted August 17, 2009 Had the same problem. Does the pitch of the humming change with vehicle speed? If so, then yes, its a bad wheel bearing....that fixed my problem. Link to comment Share on other sites More sharing options...
twisted Posted August 17, 2009 Author Share Posted August 17, 2009 starts at >25-30mph louder at higher speeds disappears when speed <30mph cant figure out which wheel it might be though. the sound and gas/brake pedal feel like, as if your revs went up then ur car shifted into higher gear but the revs are stuck at 4000 (even though thats not really the case) Link to comment Share on other sites More sharing options...
donut Posted August 19, 2009 Share Posted August 19, 2009 what you describe still sounds like a wheel bearing problem. i bought my car used so the dealership fixed it before i drove off. Ive heard its relatively easy to replace a wheel bearing on GM cars but not sure how much different a subie would be. have a mechanic take a look (dont take to the subaru dealership unless you want to pay an arm and a leg) Link to comment Share on other sites More sharing options...
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