Quin,
I had a hunting idle like you describe, and I replaced the TB, the IAB, the TPS and the BAP. When I swapped in a Cobra Intake we found a rotted, torn, scummy vacuum hose under the intake that connects to other vac hoses at the firewall....we replaced that vac hose and now the idle is fine. Good vacuum is very important to these cars.
Good Luck
Rich
My '93 GT Page
