So, my ZX2 developed a vibration in the engine while I was on vacation. It was very weird because it didn't seem to effect engine performance, so I figured I could drive it home and diagnose it there. Well, 45 minutes from home with all the gauges reading normal the engine stops running. I coast it up an off-ramp and try to refire it without luck. Push it into a parking lot and I notice coolant is leaking. I also notice the serpentine belt is just hanging loose. When I touch the water pump pulley, it was loose because the bearings had failed. (No doubt the vibration) Well, I've now replaced the water pump (filled it back up) and placed the serpentine belt back on, but it still won't start. Is there some safety cut-off feature the cooling system has to prevent the engine from running? Any ideas of what's wrong?