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1999 Chevy Lumina Catalyic converter plugged

Tiny
WILLSON503
  • MEMBER
  • 1999 CHEVROLET LUMINA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
In the last year I have had to replace the catalyic converter twice. What would cause it to plug up?
Can I get a test pipe to run the car while it is being tested to find the cause?
Sunday, November 15th, 2009 AT 6:32 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
As far as the test pipe, you need to find out what the local laws are in your area.

Now for the converter, has the check engine light been coming on? Also, with 200K on the engine, it could be allowing unburned fuel (due to compression) to enter the converter.

Let me know about the light.
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Monday, November 16th, 2009 AT 7:15 AM
Tiny
WILLSON503
  • MEMBER
  • 2 POSTS
Yes the check engine light comes on.
The codes indicate the converter is plugged.
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Monday, November 16th, 2009 AT 7:02 PM

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