I have a 2002 Mitsubitshi galant its runs for a while then cuts off. It may drive 4-5 miles then it may cut off. it takes a couple of minutes then it will cut back on and drive a little before repeat.
My 2000 Galant did the exact same thing 2 years ago. Cuts off for about 5 seconds then comes back to life while you're driving. The people and Mitsubishi and Firestone were suggesting an engine rebuild or a new motor. I had to get rid of it and get another car.
Fuel filter maybe..check diagnostic code
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