1991 mustang gt 140k miles / i can start it in the mornin and i runs fine but after 5 0r 6 miles of driving it quits ...and when i say quit i mean that theres no missin no back firing no nothin it just shut down and will not start back until about 3 or 4 hours later ....i dont think its because it gets hot because i let it run for a while in the morning to warm up and i just had a ignition modual put on it ...thats what the garage said it was( guess thats money down the drain) anyways what could it possibly be ...i also checked the firing and its firing also....does anyone have any ideas of whta it could be

 

Any idea when the last time the fuel filter was changed?

 

sounds like fuel pump,when the go bad or get hot they will do this and wont start up untill they cool down,if its getting spark then its the fuel

 

or the module on the side of the disty...

 

take off the ignition module and take it to advance auto and get it tester. They'll tell you if its bad or not. It sounds exactly like an ignition module problem...Fords had a problem with them when they heated up, then when they cooled down they worked again...give it a try, its free...

 

thanks guys im almost 100 percent sure all the things stated is the only things it could be im gonna go ovetr and check all of it and hoper for the best...thanks

 

Am I the only one that read this ???????? hmmmmmmmm if he just had the ignition module on the side of the dizzy just replaced..if and so that is what the garage replaced and what you are refering to as the ignition module/TFI module...than wouldn't it be safe to assume that that's not the problem????[&:].......if you have spark and you verified that when it won't start then it could be a fuel system problem ...when it won't start do you hear the fuel pump come on briefly when turning the key on to the koeo mode??? a quick way to determine if it's a problem with the fuel system is when it dies run out and spray some spray start in it then crank it up..if it fires up briefly then it's a fuel system problem if not could be spark related