Car Starting Issues...

i dont think it would be the fuel pump because after the car gets warm , it runs perfectly he said.My guess is the IAC as well , it might need some cleaning.

I had the same issues at about 70,000 with my 99 GT. Sounds like it is definitely the IAC. Some say you can remove it and spray it down good with carb cleaner to fix the problem, however, there are internal parts in it that carb cleaner will not clean as I found out. The problem came back quickly. I would replace entirely. Expect that if you keep the car, and even if you properly maintain it, you will need to replace it again at around 100,000 to 120,000. I need to replace mine again and I have 132,000 on it.