Possible clogged catalytic converter issue

Tiny
CALOVE001
  • MEMBER
  • 2016 KIA RIO
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 89,000 MILES
My car won't shift down when at a stop until I reach 50 MPH or 3.5 RPMs. I suspected my transmission was going out, so I took it to Kia. They said nothing showed on the diagnostic and suggested it may be the catalytic converters clogged. I see getting these replaced is expensive so is there any way to tell for sure if this is the issue? Also, does my car have one or two? Thanks
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Thursday, June 9th, 2022 AT 10:25 AM

3 Replies

Tiny
SQM
  • EXPERT
Hello,

Is the check engine light illuminated?
Are you getting any error codes?

Here is a helpful guide on how to test the catalytic converter:

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

This vehicle should have two converters, one at the exhaust manifold and the secondary one on the exhaust pipe under the vehicle.

I have attached a diagram below for your reference.

Let me know of any questions.
Thank you.
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Friday, June 10th, 2022 AT 10:01 AM
Tiny
CALOVE001
  • MEMBER
No check engine light and no error codes.
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Friday, June 10th, 2022 AT 10:43 AM
Tiny
SQM
  • EXPERT
Most of the time if there is issue with the converter it will trigger the check engine light.
Let me know if you are able to test the converters.
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Friday, June 10th, 2022 AT 12:53 PM

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