I just cleaned the IAC on my '98 ZX2 about an hour ago. It is located on the drivers' side. Look below the air-intake duct work and behind the rubber PCV hose. The PCV hose runs from the front of the engine and wraps bacl along the side. You will see the electrical connection going into the IAC. Two bolt hold the IAC on. The top one is easy, the bottom can be a little tricky for some. It a lot easier to remove the unit if you remove the duct fron the air filter box to throttle body.