i have a d16y8 in my 99 hatch, and it used to be in my buddys car until he bought a b16 for his car. then i ended up with the motor for nothing, so we put it in my car and when i have been driving it for about 15 minutes or so the motor starts to pulse when the gas pedal is held down just a little bit. i ran a diagnostic on it and it gave me a 14"IACV" code, then i put a new IACV in and the problem was solved or so i thought until the next moring i got in my car and it started to do the same thing all over again. i have been dealing with this for about 4 months and i am stuck. i was just woundering if any of you could help me out?