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Cat temperature?

Tiny
DONNIE H
  • MEMBER
  • 2014 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
Truck running with small miss. I checked cat temperature upstream bank 1 256 degrees downstream 420 degrees bank 2 upstream 242 degrees downstream 452 degrees, is this good or bad?
Thursday, June 15th, 2023 AT 5:20 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,244 POSTS
The temperature outside is usually between 30 and 100 degrees hotter. You are a little beyond that point, but I don't feel it is that far out. What is happening that caused you to check the converters?

Also, take a look at this link, you may find it helpful:

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

Let me know.

Joe
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Thursday, June 15th, 2023 AT 11:47 PM

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