[tacoma man.]

did you disconnect your battery after replacing the mass air flo sensor? and also i would replace the oxygen sensors, a car this old, they need replaced, my camaro done the same thing, you can get them at advance outo parts for $20 and i beleive that you will need 2, not sure tho, my v8 camaro uses 2.
but it was so bad that i sucked a full tank in two days, after that i could drive it through out the weel and still have gas left to do half of the next week.