If I recall, you can bypass the AFM by jumping the two brass looking terminals in the wiring harness. you prabably still need to keep the AFM hooked up to the T.Body.

I'm going to go with a vacume leak somewhere. When I had a vacume leak, the truck would start, then sputter then idel fine. It was a small leak, so if you have a bigger leak I would imagine it would start, then stall out. But it did start fine once warmed up.

87 Toyota 4Runner-RV Head, Custom Grind Cam, Doug Thorley Header, Keith Black Pistions, 2 1/4" Magnaflow cat, Dynomax Exhaust
2003 Toyota Matrix XRS-Injen CAI