Iac code

[cips8404]

My 2002 ls 3.9 threw code for iac, I popped off the hose that goes to it and it is all carboned up, what and if can I use to clean and should I remove or clean while it's on there

 

[LS4me]

My 2002 ls 3.9 threw code for iac, I popped off the hose that goes to it and it is all carboned up, what and if can I use to clean and should I remove or clean while it's on thereView attachment 828476394

Need a new one. I have never successfully cleaned one.