Truck dies when I rev it up in park. Any ideas? IAC Valve maybe?

[Mooney1500]

I have a 2001 Ram 1500 5.9l V8 I just purchased and just recently had a lot of maintenance done to it. Truck drives great but only issue I’ve noticed is when it’s in park and idling if I rev up the engine and then let foot of the gas the truck stalls out. Any ideas? New to the forum so sorry if this has been asked before!

 

[lieutenant Aldo]

Your throttle body may be bad/disconnected maybe.?