Will not go over 60 MPH and it will not shift gears past second?

Tiny
RMAHON315
  • MEMBER
  • 2017 HYUNDAI SONATA
  • AUTOMATIC
  • 36 MILES
Won’t go over 60mph and transmission won’t shift gears past 2nd.
Sunday, June 4th, 2023 AT 9:50 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
This sounds like a typical clogged catalytic converter but to be sure this guide can help confirm the issue. What size engine is in this car?

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Also, we should run the codes as well.

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

Please go over these guides and get back to us.
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Monday, June 5th, 2023 AT 1:16 PM

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