Hello all, great forum, once again. I have a p0420 code ,but not a noticeable change in performance except maybe a rough idle on my 2000 blazer lt . I've actually found the flow chart to diagnose it here, but for some reason it comes up unledgibly blurry. If someone could tell me what it says or tell me how to view it, I'd be much obliged. I really want to run it down by the numbers. I love this truck and it's my daily so I try to keep up with maintenance regularly. Thanks in advance for any replies.

 

Will this help you out?

 

It's probably exactly what I'm needing, but again it's just a blurry image. maybe my phone doesn't work right?

 

I've managed to find one that wasn't blurry. So now I can go get it. I'll post back when it's done.

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Keep us updated.

 

​​​​​update
I've been studying and waiting on payday lol! Checked the converter with an infra red thermometer and it's 100 degrees cooler at the outlet than the inlet. It's not broken (clogged) , it's just not working no more. So, on payday, I'll order a new one. Any suggestions on brand? I've seen them from 50$ to much, much more. Thanks all!

 

Thanks for the update.

 

Personally i like Walker or Bosal. Any cat that is direct fit will cause the check engine light to go off and stay off. Buyer Beware when it comes to the Universal ones. They dont work and if they do only for a short amount of time.

 

thanks for the heads up, Brian. I'll look for a direct fit.