catalytic converter

I've got a 2007 T&C, 220k miles, with a plugged cat. I'm considering either replacing it or, *cough* not replacing it *cough. It looks like there are some methods to trick the computer into not throwing a P0420 by using a couple of spark plug defoulers to raise the trailing O2 sensor out of the...

I used one jack stand on passenger side that worked fine. The 4 slots that the 4 bolts go through from cat to manifold has no threads. There are nuts that only hold the 4 bolts. 4 bolts push through the slots of the CAT and through the manifold and then bolt into 4 nuts. Best to get the...

0420 code catalytic converter inefficient on 3.8 engine 06, 92,000 miles had code for about 6 wks. bought a bafx adapter scanner and using Torque software on phone I tested temperature before cat and after. it was a 100 degrees hotter after the CAT. Which from what i read or see on videos it...

I have a 2008 Dodge GC 3.3. Approx 190,000 miles. It's my airport livery and personal travel vehicle...predeominantly highway miles. The past month or so the 'engine light' has been coming on. My mechanic says it is indicating catalytic converter problem. I'm wondering/hoping if there could...

I need some help. Four months ago, I changed the Catalytic Converter and both O2 sensors with Chrysler parts. Everything was good for three months, now the P0420 is back. Any ideas? The 2006 has 152K miles and is on the second CC. I have one of those 3.8's that burns lots of oil and the CC...

I have an 06 T&C 3.8L and its been throwing a P0420 catalyst system efficiency below threshold bank 1 code. I have replaced both front and back O2 sensors after reading that the code could be the sensors & to try that first to see if its just the sensors. I did a big tune up while replacing the...