Poor acceleration and loud vibration/humming

2017 SUBARU LEGACY
84,000 MILES • 2.5L • 4 CYL • 4WD • AUTOMATIC
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WILLIAMHANS79
  • MEMBER
  • 1 POST
I’m experiencing poor acceleration and loud vibration/humming in between 35-45 ish. Car jumps with light pedal adjustment around 15 mph. Car seems to engine break really hard.
Jun 30, 2020 at 10:33 AM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
This sounds like a sensor issue like a speed sensor or other transmission sensor. However, with this vehicle being so new, we need to start with checking for codes because I suspect we have some as most everything on modern vehicles are monitored. Even though you may not have a check engine light, you could still have some codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

let us know what codes you have and we can go from there because right now the potential issues are many and we don't have enough info yet to point to one issue.
Jul 1, 2020 at 7:40 AM
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