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Acceleration issues?

Tiny
WAMMARA JUSTINE
  • MEMBER
  • 2018 HYUNDAI TUCSON
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 145,000 MILES
We have had the car at the dealership and no codes came up. Dealer said to replace catalytic converter as a temporary fix. However, this car has 2 catalytic converters, which one do we replace? They say it’s getting clogged and that is part of the issue with acceleration problems.
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Monday, November 6th, 2023 AT 9:12 PM

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Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 41,146 POSTS
I only see one catalytic converter on this car, here is the system so you can see for yourself. I can't see how replacing catalytic converter is a "temporary" fix? Does the car have any codes? Here is how you can test the cat by using this guide. Do you live in California, if so, you may have a catalytic converter where the exhaust manifold is in which case this would be the one I would change?

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

Here is a guide as well:

https://www.2carpros.com/articles/engine-has-low-power-output

I would run the codes as well.

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

This should help us confirm the problem as well. Check out the images (below). Please let us know what happens.

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Tuesday, November 7th, 2023 AT 9:24 AM

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