Car having trouble staying running

Ok well I'm no car buff... I have a 99 ford crown vic 4.6 V8. It has about 85,000 on it now. It gets regular oil changes and is kept in very good condition. However recently when i go to start it, it will turn over but won't stay running. Usually have to keep my foot on the gas for a while and get it moving for it to stay running. After it's running and moving there is no problem. Today the check engine light decided to come on, and I plan on having my friend jump the code. Any ideas from you car guys??

IAC motor. Idle Air Control motor. These are bad about gumming up or sticking.