LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Just threw DTC P0420 Catalyst System Below Threshold

Old Sep 12, 2003 | 07:49 PM
  #16  
matt diamond's Avatar
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Joined: Sep 1999
Posts: 101
From: Gilbert, AZ
don't pay $500, that is way too much.

You can buy two catco high flow cats. I think they are about $75 each.

I went to a muffler shop and they welded the new cat on the car for $30.

Do not go to the stealership.
Old Sep 12, 2003 | 07:54 PM
  #17  
sj777's Avatar
Registered User
 
Joined: Nov 2000
Posts: 17
From: Atlanta, GA
Thanks for the feedback. Of course the SES goes off 24 hours later and everything seems normal. I just may go and do the O2 sensors anyway... steve c
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