I have a 2001 Subaru Outback.

When I come to a stop at a stoplight I get a nasty vibration. Seem centered around the passenger front. We did axles last year but are high mileage drivers. Axles were Ebay specials. I also drive the snot out of the car. Shifting into Nuetral fixes the problem. I replaced the Torque Converter 3 months ago. Didn't fix. No CEL's. I work on a ton of these so pretty comfortable around the motor and transmission. Not a big deal to pull one and put it back in for me. Bad axle again? I am really struggling to figure this one out.

Thanks in advance!

More Notes: Flange vibration sound when we are at a stop light. We also notice small performance issues - it just seems sluggish.

Matt & Jes

  • Is the vibration as you stop or after you've stopped the car? Oct 5 '16 at 16:34
  • @Paulster2 I can tell its doing it as we stop, but its most notably when it is at a complete stop.
    – Mathew A.
    Oct 5 '16 at 16:36
  • Is your engine turbocharged? If not, I'd suggest you have a vacuum leak in the intake after the throttle body. Just a gut check, though. Oct 5 '16 at 17:06
  • Is the dogbone (pitch stop) in place? There isn't much connecting the engine to the chassis on a Subaru - the dogbone and two 14mm bolts on the subframe. Maybe one of these is loose and letting the engine move. My first thought would have been a misfire, but with no CEL, probably not.
    – PeteCon
    Oct 5 '16 at 17:52
  • Not turbocharged. I can check for a vacuum leak, thanks for the tip @Paulster2.
    – Mathew A.
    Oct 11 '16 at 15:39

Replaced Axles. Problem solved.

  • Thank you for coming back to provide closure - its appreciated.
    – Criggie
    Dec 21 '16 at 3:34

My money is on one or more bad engine/transaxle mounts. It would not be the axles if it happens when at a complete stop as they are not moving.

  • 1
    Another forum when googling "Vibration When Stopped in Gear Outback" seems to make a pretty good argument for the axle causing just this. I don't have my mind made up or anything... but I just had them out and the mounts look great. subaruoutback.org/forums/66-problems-maintenance/…
    – Mathew A.
    Oct 6 '16 at 16:38
  • 2
    ^^^ Word to the unsuspecting: First 25 posts of that are great, and fascinating. You can stop reading around #25, it goes downhill from there, heh.
    – Jason C
    Oct 6 '16 at 19:39

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