Sounds like the oil pressure switch is stuck on. The relay doesn't power the pump full time. The relay and computer power the pump for a few seconds just to build pressure in the system. Once the engine starts it builds oil pressure and that activates a pressure switch. That switch actually powers the pump. It also acts as a safety. No oil pressure and the engine won't run.
Tuesday, July 29th, 2008 AT 9:36 PM