NEED HELP!!!!

[TrippiGT]

99 GT and I just cracked the intake manifold. got a new intake manifold, new spark plugs and new IAC. filled it up with fluids and it ran for a while. I went to drive it and the Radiator light came on and now its showing a diagnostic code IAFF in the instrument cluster. ANYBODY KNOW WHAT THAT MEANS? any input is appreciated. and I've already looked at the list of codes on here and thats not one of them.

 

[streethorse]

You might have an air pocket in the cooling system.... my guess.

 

[SaleenGT2001]

sounds like an air pocket or low radiator fluid