Loss of power, loud, rough idle and catalytic converter is glowing red

Tiny
TAYLORFUGATE03
  • MEMBER
  • 2000 FORD EXPEDITION
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 310,000 MILES
All of a sudden got really loud and sounds kind of like a diesel. Loss of acceleration power, sputters, rough idle. Catalytic converter glowing red.
Thursday, March 7th, 2019 AT 7:48 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This definitely sounds to me like it is a plugged catalytic converter. Sometimes the "honeycomb" inside the catalytic converter, really it is the catalyst, breaks a piece off. This will plug the catalytic converter and cause overheating and a lack of power because the hot exhaust gas now has nowhere to go. The lack of power is due to your engine being choked out on the trapped exhaust gas. I have included some links down below.

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

Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros
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Friday, March 8th, 2019 AT 1:49 AM

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