1989 Chevy Celebrity Gas Leaking from throttle body

2.8 Multi-Port Fuel Injected

The engine was not idling and stalling at stops just before stopping completely and now not starting at all. Noticed a strong gas smell and pool of gas on driver side in front. Got a pan to collect the gas (and a fire extinguisher!) And turned key to on position to turn on the fuel pump to trace the leak. Turned out to be leaking out of the air filter canister. Followed the leak up to the throttle body. Pulled the throttle body and re-tested. The gas was spraying out of the back side of the throttle body on the side where the IAC valve is located. Could a stuck IAC valve cause a gas leak or is it most likely the throttle body. Or something further up in the system?