I have a 2000 Mustang GT with 65000 miles. For about the last two weeks it has been hesitating a little when cruising at highway speed. It has starting cutting off intermittently when coming to a stop. It will crank right back up when it does cut off though. I have run fuel cleaner through the system recently. I doesn't seem to do the hesitationuntil the engine gets warmed up after a few miles. The car has been well maintained. It is an automatic transmission and have not seen any check engine light come on. Has anyone on the forum had an issue with their Mustang like this?

 

possibly your IAC, TPS, TB dirty... not really sure.

 

check your intake make sure it isnt coming loose anywhere after the maf to much air can do that i learned the hard way

 

Mine started the dying thing also. It only did it when it was real hot outside, and I have been driving for a while. I believe mine ending up being something to do with the battery. I know sounds very odd, but I changed the battery, because it had 2 small slices in it by the post, and it quit dying on me. It has ran fine for a couple of weeks now with no problem