cctowboat1
New member
It stated doing this once in awhile, now all the time. The engine starts fine, when I give it a little throttle the alarm goes off for 10 sec and stops, more gas same thing until I get to about 1500rpm's then it stays on. The oil pressure gauge tells me I have good oil pressure. Engine runs fine till I get to 2000RPM and then every 10 seconds the RPM's drop about 1000RPM's for a second and then go back up for another 10 seconds and does it again. It will not go over 2800RPM's from half throttle to full throttle. I had someone put a diagnostic tester on it and was told it is telling me no oil pressure. I checked the sensor and switch and the two wires were broken off the terminal, great found the problem...NOT....put new terminal on the two wires and hooked back up, same thing. One of the wires looked like it had a clear cover at a spot where I could see a thin wire? I changed fuel filter, cap & rotor, and cleaned the water/ fuel separator. still did not solve the problem, switched the ECM's from the other engine, no luck, bought a Sierra oil pressure switch and tried that, not sure if switch was bad and if this one would even work. Any one got any ideas or suggestions?