I am having some idle problems and having trouble figuring it out.

Motor is a JDM b18b - I used the stock DX harness from my 97 hatch and its using a phearable.net obd2a>obd1 jumper harness.

-I have cleaned the IACV twice (I have also done to 3 to 2 wire conversion)
-I cannot find any vacuum leaks (sprayed cleaner on the vacuum lines etc and it didnt change the idle)
-There is NO FITV (motor is a 97)
-I have let the air bubbles out of the coolant system ...
-Timing is stock and checks out ok

The car idles at around 500rpms - adjusting the idle does not seem to help. and when I pull the car out of gear the tach drops to almost zero and then bounces up to 500 or 600 and steadies itself at around 500rpms again, Im at a loss, anyone? its been going on for like 2 months ...

If you have access to a boost gauge that reads vacuum the "T" it into another vacuum source. At Idle you should be reading 20-22 pounds of vacuum, more than that would indicate a timing problem and less than that would indicate a vacuum leak. This helped me figure out that a friends GSR turbo had a warped intake manifold even though the starter fluid wasn't budging the idle.

hmm - well Im taking it to a local guy on wednesday see what he says, if it comes down to it I will go get a vacuum gauge for sure

well my temp gauge started bouncing all over the place with my rpms, but the car was running fine so I stopped to check it out, found out that there is an arc from my transmission to my engine bay when I start the car, so I have a bad ground or a short somewhere