[wiswind]

I would think that you would get a code(s) if the Module was defective. A common cause of idle problems is the IAC (Idle Air Control). When your foot is NOT on the accelerator.....the IAC is what controls the air into the engine.

One thing that you can try, is pressing your foot on the accelerator just enough to very slightly speed up the engine.....and see if it still hunts. If it does...most likely the problem is not the IAC.

Another possibility is if there is a problem with the Throttle Position Sensor (TPS)...less likely.

Yet Another thing to try is cleaning the MAF (I have detailed pictures of the MAF on the '96 3.8L in my pictures). You hold the MAF so that the hole that faces the air filter is facing UP.....and the rest of the plastic bar that that hole is on....slopes down away from the hole...spray non-residue electronic cleaner in the hole that faces the air cleaner.....and it will run out the hole that is on the other side of the bar....flushing out any crud.

An off the wall thing to try...if none of these work.....is to look into the fuel pressure. The fuel pressure regulator has a vaccum connection on it.....and the fuel pressure will vary with a varience in vaccum. More vaccum = less fuel pressure. The idea is to give more fuel pressure under heavy acceleration (which results in lower vaccum). I remember reading something about the vaccum connection becoming loose and causing a vaccum leak at that point. I thought it was on newer windstars.....but...worth a look. The Fuel Pressure regulator is on the fuel rail......on the '96....it is on the passenger side...very near the IMRC actuators..... I am not sure where it is on the '95...... as you have a different intake manifold.