92 idle problem

I have a 92 2.2 that idles to slow or not at all. i replaced the IAS or IAC not sure what it is called on a Cavalier. After I did that it idled about 2k. I then disconnected the battery and after reconnecting it idled fine for about 5 mins. Then it went back to no idle. Are the idle air valves on these adjustable it looks like it can be screwed in and out? Looking for suggestions. Thank You

Fuel injectors may be clogged. Try STP Fuel Cleaner in gas tank.