please help me!!!

[icer]

The car drives fine but when I stop and take my foot off the gas the idle starts going up and down between 800-500 then it will just stall, I had to shift into N and rev it a lights on my way home from work. What could it be I thought it was the o2 sensor but I unplugged it totally on my other '91 and it ran fine. MAS, fuel regulator, it feels like either its not getting fuel or air. Please help..........

[Jeff240sx]

Look a couple pages down this page for a thread titled "idle issues" (for a KA24DE).  There is stuff there that is idle related.
-Jeff

[icer]

well according to the other posts it could be the Idle Control Valve, o2, throttle position sensor, and a few other anybody got any ideas i got a spare '91 for parts if needed but the car doesn't drive that good and I'd hate to have to bring my good one to the shop again