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  1. LF (2015-2019) Sonata/i45
    Hello all, this is my first post here. I currently own a 2016 2.4 Sonata with 127,000 miles. Knock sensor update 953 was performed in 2019 on the car. Over the last year I have noticed degraded engine performance (weak acceleration, lagging on gas pedal press, upshift when trying to merge like...
  2. LF (2015-2019) Sonata/i45
    I have a 2016 Sonata 2.4 with a Runner Control Motor code. The vehicle was hesitating under harder acceleration and doesn't want to downshift under harder acceleration. I replaced the VCMA with no improvement. What should I check before I give the dealer all of my money.
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