I can start the car fine in the garage. It'll idle fine for 15 minutes or so to warm up. Then on a test drive it'll die after a couple of miles. Then really hard to restart. I've replaced the coil and ballast resistor to no avail. Same problem persists.
Just wondering what to try next ? Fuel pump ?
Electrics seem to be OK. Ignition switch is cold to the touch.
Any advice appreciated