I am the proud owner of a 93' N/A 300Zx. My problem is that when i reach the speed of anywhere between 45-70 and then slow somewhat moderatly to a stop my Z will shutdown and i will have to restart the engine. I recently replaced my water pump along with a few odds and ends and discoverd that i had a bad gasket on the front of the pump i assumed this was the cause of the problem. Seemed ok for a few weeks now i am encountering the same problems. Does anyone have an idea to what else this problem could be contributed to. -Thanks