I have been having this problem with my mustang shutting off after like an hour of driving. It will be running fine until it shuts off. Im not getting any detonation or hesistation before it does so. The thermostat will be at 190', the fuel pump will stay on, and I have a small vacuum leak. I have replaced the plugs, wires, coil, ignition module, and this has still not alleviated the problem. Any feedback that you could give would be greatly appreciated.
