Idle Air Control (IAC) Valve? Don't know if the '93 SHO has one but I have heard the IAC can cause idle problems. Do you have any other driveability problems?bballcat03 said:Hey all. I got a problem I'm hopin someone could help me with. I have a 93 SHO and whenever I'm just sitting there idling, it will just die like I've killed it. It's a stick also. Any ideas?