I have a V6 California model that has been a big headache. Until recently it ran well. Some days better than others.
The check engine light began to come on displaying a 71 error code(specific to California models). I assume this is due to all those stupid vacuum lines.
Now, when started cold the engine seams to run smoothly but smells like it's burning rich. When the engine warms it seams to run very lean with no exhaust smell. Also, when revved up it hesitates and may even stall.
I checked all hoses for leaks. Two are capped off going nowhere.
I had installed a remanufactured engine last year. Was very careful in numbering and routing all vacuum lines entering the air intake chamber. However, several lines enter a single sensor does this order matter? Could my EGR be bad?
HELP!!!

When's the last time you had a good tuneup and cleaned the t'body and made sure the TPS is okay?

We have a 3.0 FSM sticky'd in the early trucks section, and a 3.4 FSM sticky'd in the Taco section if you need some vacuum diagrams to make SURE all your stuff is connected properly.

When's the last time the 02 sensors were changed?

www.autoshop101.com tech articles are awesome
www.sparkplugs.com Denso 02 sensors if you wind up needing them. <img src="/forums/images/graemlins/kewl.gif" alt="" />

If you are refering to the place were the three hoses are grouped together in kind of a triangle shape. It does matter which order. I mix two of them up once and it ran poorly on my 95.

Sounds like a plugged EGR to me...