I have an Astro with a p 420 catylitic converter low effitiency

Tiny
HORSESHOE
  • MEMBER
  • 2000 CHEVROLET ASTRO
  • 145,000 MILES
While driving engine slightly hasitates seems to indicate missfire
Wednesday, November 2nd, 2011 AT 7:30 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Cat has failed most likely from a missfire you have. The unburned fuel is what kills the converter.
I suggest you resolve the missfires and you will still most likely have to replace the cat as well.

Roy
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Wednesday, November 2nd, 2011 AT 7:33 PM

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