Short Intro

Used to be against imports untill a friend purchased his first new vehicle back in 1986 it was an extended cab sr5, which we routinely wheeled in the desert around Phoenix Az. I have been a believer ever since. That truck
was extremely durable in that it took quite a beating and lasted well over250k miles.
Those were the good ol days just out of High School.
I own an 01 Tacoma DBL Cab 4x4 now and am far away from anywhere as
cool as AZ to wheel (Nebraska), the truck does get thrashed through a
field ocasionally or takes me over minimal maintenance roads with ease,
but more importantly allows the wife to get the kids to school etc. during
the winter months. 135,000 miles original owner.
Just stumbled on to this site while looking for information on engine trouble
codes (po420 cat. sys. efficiency below threshold), and decided to join,(a first for me).
I am a Machinist for a local Public Utility.

 

Welcome to TW Tacotoe.

 

Welcome aboard. If you've got questions, someone here has answers.

 

Welcome to TW, toy4life said it best. Try technical chat.

 

PO420 usually means your catalystic convertors are clogged. I'm not sure how you can fix it beside changing new ones. I don't know if there are chemicals out there that allows you to flush/clean it. Might want to search the Internet to see if there are such a chemical.

 

if the converters are clogged, take em off! i took off the rear two on mine, but if you need to keep them on, you can always take them apart and either clean them out and repack it or just hollow it out and throw them back on. if you get a code for the o2 sensors after that, use spark plug non-foulers and screw those into the o2 bungs, then put the o2 sensors into the non-foulers. this will back them out of the pipe enough to where it won't pick up as much of the gases, and it will keep it from throwing codes. worked on a few of my cars

 

welcome to tw

 

thanks for the advice, your suggestions have crossed my mind,I was actually
thinking about a press on cover that would only allow a small amount of exhaust to register.I have already replaced the front o2 sensor and no help there. I have also ordered a gibson cat back exhaust, I know my thought my be way out of line but the exhaust tone has sounded strange the last 8 months or so and the truck makes routine short trips so I wonder if the inside of the muffler may be deteriorated and restricted. I cant remember if it was the taco or another vehicle I owned that had a small drain hole in the bottom of the muffler. I looked yesterday and there is a small circle but if it was indeed a hole its rusted shut now.

 

thanks to all for the welcomes.This site might be addicting, I have to log out for awhile, now my son ( 8 years ) wants to give wrestling a try and tonight is sign up.Be back later, and thanks again.

 

I welcome ayou from Guatemala ...

 

Welcome to TW!

Sounds like you are on the right track with the exhaust. Personally - I would do the same thing. Exhaust issues = a chance to upgrade.

Cheers!