Engine Performance problem
1997 Ford Station Wagon 4 cyl Two Wheel Drive Automatic 120k miles
our 97 ford escort wagon keeps stalling after driving it for about 10 minutes. We have had it to 2 different mechanics. One said it is the transmission. The other thinks it's the computer or wiring. They said it is only firing on 2 cylinders. I have already replaced the spark plugs & their wires and the coil pack. I don't have the money to keep trying different things. What do you think it is?