I recently purchased a 1998 honda accord v6 for my daughter. The car will stall not all the time when you are driving down the highway. You can be going 70 miles an hour and it totally shuts off with no warning. You have to let it set for a few minutes and then it will finally start. I had the ingnition switch replaced but this apprently was not the problem as I had it done yesterday and it died 3 times today on the highway on the way home. Please help.