Damn Idle Issue Please Help

[CopperGSX]

So I got a 95 GSX with minor mods. The most extensive engine mods are UICP, 1G BOV, LICP, MBC, Intake Pipe and K&N conical Filter.

History:
1 year ago got idle surge bad. Replaced the ICS wwith a used one. Ran fine. Then started acting up again two months ago. Bit the bullet and took it to the Mitsu dealer. They told me ICS. But wanted $400 to fix it. Sorry I've owned my GSX long enough to know how to change a ICS. Anyway I got a brand spankin New ICS. Put it in and my car idles at 750-800RPM.

Problem:
Now when I start it and drive all is well. But if I turn it off and get back into it then we have it surging to 1500rpms. If I hit the gas and bring it up to 4500 RPM quick it will then drop back to 750-800 RPM. Then it will start again. It seems to only happen if I've driven it for awhile and then turn it off and shortly hop back in it again. I would estimate the time to be about as long as it takes to fill the tank at the Gas station.

What I've Found:
when it is surging I have popped the hood and then inspect the Throttle cable. IT's not super tight and also not super loose. But I can actually put my thumb on the assy that the Throttle cable attaches to and push it closed. The idle then drops to 750-800RPM's and all seems well. But it will come back in a bit.

Questions:
What can it be?
Dirty throttle body, when it heats up there is some sludge or gunk in there that blocks the Butterfly? That is what I am assuming.
PVC valve going bad?

Any ideas would be greatly appreciated

Thanks

[illz]

clean the throttle body, wd40 that bitch. see what happens.

[gmort]

When I got my talon 2 years ago, it was doing almost the same thing. I ended up blocking off the fast idle air valve on the throttle body and re-routing the coolant lines. It seemed to solve the problem for me, plus it kept the throttle body a bit cooler.
Good luck.

[Super Bleeder!!]

i also blocked off the FIAV and ISC with a plate that fellow member Jet made for me. my idle used to bounce around everywhere, and now its just fine.

[CopperGSX]

I'll check on what you suggested and see if that helps. Thanks.

[john]

Use carb cleaner on the TB instead of WD40.

[demon]

Anyone knows where I can get a cheap fiav? I have the same problems and I've done everything
I cleaned the tb wd40 plus the carbcleaner. I'm getting the biss screw and trying the fiav if that'll help.