SES Light, Codes, Emissions
#1
SES Light, Codes, Emissions
I have a 99 blazer LT with 145,000. I bought it a few days ago. When I drove it home the SES light came on (awesome). I pulled the codes.
A total of 3 codes, all emissions related I believe.
P0420 catalyst system below threshold bank 1 (this code came up twice)
P0133 circut slow response bank 1 sensor 1
I've read the tech articles for these codes so I have a basic understanding of what it could be. The converter isn't making any noises. The truck does seem to have a very slight stutter or hesitation when at idle but it isn't very repetitive.
I guess I'm asking you fellas where you think I should start? How do I know for a fact the o2 sensors are bad or the cat converter is bad?
More importantly, what causes it? And how do I stop it from happening. There's a really good chevy dealer where I live, I may take it in and have them do an inspection/diagnosis on it.
Thanks for your help.
Mack
A total of 3 codes, all emissions related I believe.
P0420 catalyst system below threshold bank 1 (this code came up twice)
P0133 circut slow response bank 1 sensor 1
I've read the tech articles for these codes so I have a basic understanding of what it could be. The converter isn't making any noises. The truck does seem to have a very slight stutter or hesitation when at idle but it isn't very repetitive.
I guess I'm asking you fellas where you think I should start? How do I know for a fact the o2 sensors are bad or the cat converter is bad?
More importantly, what causes it? And how do I stop it from happening. There's a really good chevy dealer where I live, I may take it in and have them do an inspection/diagnosis on it.
Thanks for your help.
Mack
Thread
Thread Starter
Forum
Replies
Last Post
vracer99
1st Generation S-series (1983-1994) Tech
3
03-27-2011 07:58 PM
Sneeeps
2nd Generation S-series (1995-2005) Tech
4
10-29-2008 11:34 AM