So what can cause a catalytic converter to fail? And is it possible to tell just by doing a surface temp check at a muffler shop? I've heard running overly rich (like I am now) can ruin them? how much does that take to ruin them? a day or two, or weeks or months? I have to replace my cat according to a muffler shop and I'm just curious since they told me it was bad just based on the temperature of it being way too cold even after about 30 minutes of me driving around. So, any good references to info about catalytic converters? advice? etc? Thanks All
-Will
89 Lebaron 2.5L T1 A413 - lightly modded