My mustang randomly shuts off
My mustang runs great then with no warning will shut off
while I am driving. Sometimes it starts back up sometimes
it take a hrs before it starts. A few times when driving it
wont accelerate and then starts acting funny. I have an
air/fuel ratio gauge and everytine the car shuts down that
gauge goes off but all of the other gauges work. I have
replaced the alternator and the ignition switch. It runs fine
for a week then shuts off then runs again for about a week
and same issue. I have had it tested for codes and nothing
is showing up. This is soooooo frustrating anyone with
insight please help.