It's clearly running rich so it isn't fuel starved.

When mine was getting 12 mpg it was the cat. Ripped out said cat, put a pipe in its place, and hello 20 mpg...

Clean and test your maf I'd say.

 

So it wouldnt be the regulator? I have already tried cleaning the maf didnt help any. how do you test the maf? never done that. Thanks for all the replys guy it is apprecaited.

 

Just looked down the throttle body it isnt shiny its black so injectors should be fine I am thinking. hopfully.... lol gonna do a pressure test tomorrow just to be sure though problly gonna try the last o2 sensor to maybe a fuel filter as well.

Any other ideas on the 4wd problem though as far as I know that tccm in the passager kick panel should atleast click when you hit the button. anyway to test that besides a tec2 scan tool. tried the battery cable trick and didnt work still no clicking.

 

Fuel pressure tested I turned the key on went to about 52 then fell to 50 turned the key off and it slowly went to 60? First time I have seen that happen. after it went up to 60 waited ten mins and it fell to 50. started it up and at a idle it stayed at about 52 reved it up and it jumped to 60 and slowly came down. anyone had this happen before?????

 

When you turn the key on you just have to wait for the pump to prime, then you can turn the key off. After its off, wait for 10 minutes and that is how much leakdown you have. So if it fell to 50 after 10 minutes, then you have a leak. You may not be able to see it without removing the plenum.

 

today i have the same issue..

the guy who do the fuel gauge reading.. didnt purge the valve.

1-turning on the key...= 56 or 57 psi. then drops one minute later to 40 and 30... "maybe air in the system or something.."

2-turnning second time the key to ON... readings 57psi. and go up! to 60 more or less...
its weird...
3- pressure remaining in 58 like 7 or 8 minutes... then start to drop to 50 at minute 12 or 14...

so you have another clue???