Hi, I've got a recurring problem where above 3000 rpm the alarm sounds and the motor goes into this rpm reduction mode. The oil light goes out while the horn is going constantly. The only way to reset is by shutting down the motor. It fires up no problem! There are no codes set as the MIL light doesn't stay on. I tried disconnecting the oil pressure sender but that didn't stop the problem. It used to only happen in rough water conditions. Yes, I have done the new exhaust pipes and oil pan gasket kit. Also, the o2 sensor is new. Does anybody know what other sensors could cause this situation?? Thanks