New to the Monte Carlo
Monte Of The Month -- March 2013
Joined: Jun 2010
Posts: 8,442
From: michigan
Welcome to the site. There are a few things that can cause a cat to fail. Here is some info that may help. HowStuffWorks "How do I know if my catalytic converter has failed?"
Monte Of The Month -- August 2014
Joined: Sep 2008
Posts: 25,145
From: Southeast PA
Welcome!
Sounds like a clogged cat to me. The check engine light flashing is a misfire.
You need to do a full tune-up on this car and get the cat checked out.
Cats go bad typically by running rich.
Sounds like a clogged cat to me. The check engine light flashing is a misfire.
You need to do a full tune-up on this car and get the cat checked out.
Cats go bad typically by running rich.
Thread Starter
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Joined: Apr 2012
Posts: 4
I appreciate all the welcomes, I think those saying its the cat are right. I replaced the fuel filter today and while i was under there I tapped on the cat with a hammer... sounded like it was full of rocks.
Has anyone used a universal high flow cat or is best to just get one that is designed for the car? I'm looking to save some money if at all possible.
Has anyone used a universal high flow cat or is best to just get one that is designed for the car? I'm looking to save some money if at all possible.
Monte Of The Month -- August 2014
Joined: Sep 2008
Posts: 25,145
From: Southeast PA
You would need to remove the p0420 code from the car's computer.
