Old Problem - P0420 Update:
My ECT coolant had air in the system due to a slow leak. I ran engine with the cap off for about 15 minutes to remove the air, then filled system. ECT returned to normal.
I then built/installed a MIL Eliminator (Cost $2.50) - So far so good. I'm trying to figure out if it's worth if for me to drop the cat and bust out the brick.
I'm a little worried that the cat may be plugged. I say this because I can hold my hand over the exhaust while the engine is idling at ~2,000 rpms.
Opinions?
