So I got this 2004 mustang during the winter it runs smoothly but in the summer it stalls on a hot day when I use my ac but it doesn't stall Immediately it takes About an hour after the ac is on. it sputter out and turns off and i wait about 2 hours then i can get back in a run smoothly without the ac on the temp is normal on the dash also?

 

How is the idle? Does it drop? May be the IAC (Idle air control) valve

 

Is temp gauge rising to hot with AC use? If so, likely the radiator is partly plugged.

 

The idle is fine till the problem happens then it bogs down till it stalls and the tem gage stays in operating range

 

Other issue, not overheating.

 

While I'm driving And I push in the gas I get no power also

 

I let it sit for a couple hours and then it drive fine again

 

You should be getting an engine code that will tell you the issue.

 

The only code I have is for the cats

 

Unusual, I am stumped. Take car to a Ford dealer. I also have a 2004 Mustang and is a convertible.