Hi all, I'm new here and I have a 99 4runner modded with an lq4, 4l80E, and a street cam. This setup has been tuned by someone with what I consider a lot of tuning experience. The problem is every so often when moving slowly or coming to a stop (both with air on or off) the idle will start going up and down a lot and sometimes stalls. The tuner has not been able to fix this issue so I bought the programmer and I'm hoping to find some help here on this great forum. We have logged all the data when this problem occurs and we see that the IAC basically stops moving or moves very little while the idle cycles up and down from 900RPM to less than 500RPM. On one log this lasted 5 seconds and also during this time the Spark advance freezes and does not move. When this condition occurs it will either stall or after some seconds corrects itself and the advance and IAC starts moving again. Does anyone know what could cause this? Other than this it runs good and always idles ok when not moving. Your help would be greatly appreciated!!!