My air fuel guage is acting up like a mo fo. When I rev at Idle it just stay yellow. Oh yea this is a piece of crap autometer guage. The only time it goes to red is when I shift thats it. Did I hook it up wrong?

When you are at idle or cruising, does the blinker cycle back and forth? And when you go WOT, which is where it's really accurate, does it go to "stoic" or "rich" areas? If not, I'd say doublecheck your connection.

Make sure you have a good grounding point, and the signal wire should go to pin 30 (18 ga. black-white) at the ecu. You want the signal source to the a/f meter to be as short as possible, so tap the O2 sensor signal at the ecu harness. I hope this helps.

Or your o2 sensor could be craping out.