I'm still having idle problems in the GF's 1990 Chevy Beretta 2.2 . It has a horrible bog if you snap the throttle to the point of stalling, but if it's in neutral there is no problems at all with it. In gear at idle it's very harsh and vibrates excessively.

It has a new MAP sensor, new head and gaskets for intake manifold etc.

The EGR was unplugged due to a pinhole leak in it and the TCC Solenoid was unhooked due to it malfunctioning and preventing the trans from downshifting.

I've done the basics like new plugs/wires cleaned the throttle body, new fuel pressure regulator.

This problem was just as evident before we had to put a new head on there. So Im guessing it has to do with something else. I've sprayed with carb cleaner to check for vacuum leaks and checked the vacuum with a gauge and it all looks fine at idle/acceleration.

I'm going to check the coil packs soon, but it doesn't seem like it would be those since the problem is not evident at idle.

Maybe the EPROM is bad? Any more suggestions would be greatly appreciated