I assume your referring to the ISC (the 1G Idle Speed Control stepper motor). How did you check it?

The ECU looks at the IPS (Idle Position Switch) to know if it should be managing the engine idle speed. If the throttle is closed it will attempt to maintain the idle.

What is your normal idle speed?
What are your ISC steps at idle? When you turn on the AC?
Is your throttle body grounded using the factory strap?
When you replaced the TB seals did you touch the IPS?
Where is your BISS (Basic Idle Speed Screw) adjusted to? When did you change the o-ring last?
Does your engine speed idle up if you turn on the AC switch?
Does the idle speed drop and recover when you turn the steering wheel?
Is your air filter can cut up allowing hot air to be sucked in when the radiator fan turns on?
What is your normal battery voltage at idle?
Any CEL codes/faults?

Any other details as to modifications?

There car did this even before i replaced the throttle seals,biss oring. Isc ohms where reading properly. I also took it out and check it with the ignition on,and it move smoothly.The car doesn't have ac.When you turn the wheel it go down and goes back up,i made sure the pressure switch was hooked up.

So it stepped in and out like this when you first turn the ECU on, not just buzzed?

I did that,moved in and out smoothly. I will double check it to make sure.There is no ground strap on throttle body,just the one on intake manifold next to throttle.

For the IPS to work correctly it needs the throttle body to have a good ground. There is a ground strap between the bolts securing the throttle body to the Intake Manifold and a screw on the top of the TB.
On the 91+ engines it's attached to the top front bolt running across to the screw on the top of the throttle body. People often forget to reattach it when they change the upper intercooler piping or cleaning the TB.
Without it the TB is isolated by the two gaskets and the only electrical path depends on the TB resting on the IM studs and bolts. That's not much of a ground.

You can test the grounding my measuring the voltage at the IPS spade connector with the green wire attached and the ECU on. With the throttle closed it should read about 0v and with the throttle opened the voltage should rise to 5v or higher.

I bought the car it never had that. I will have to look up a picture. To make sure how it goes.Since the metal bracket is gone,i guess i can use a ground wire?

Thanks for the info. Mine is definitely not there.I will make one out of cable when i get a chance.

Went to Lowes got a bracket and grilled out holes and molded it,hopefully it fixes it.

That should ground it.
The IPS looks like it's seen better days. Are those homemade gaskets on the TB?

Yea,somebody did some work on the switch. When I put the throttle seals in the gaskets where shot. So I made some off the old ones,so far no leaks.

I checked all my grounds,and put the ground on the throttle body and its doing the same thing...

I checked my ohms and they were all 29. I got a video but i dont know how to put it up.

I'm not sure what you're looking for at this point. There are still many questions in my first post unanswered and those were just the start of things to look at. It's possible that there are other factors causing the issue but not enough data to point in any direction so I hit the first step which is to check the idle circuit.

Do you have the ability to datalog the car?

Yes do all the checks Steve says if all those pass open the ecu and check for leaking capacitors

As of right now I have no way too log. Last i checked the ecu caps were ok. I gonna start checking for vacuum leaks and do a boost leak test.If there an exhaust leak between the manifold among turbine housing that shouldn't cause it right?.I thought i heard a leak there but i need to double check. Thanks for the help.