Possible clogged catalytic converter issue

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

3 Replies

SQM

MECHANIC
6,383 POSTS

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.

Image (Click to make bigger)