The warning buzzer on my rig is buzzing again no matter what – even without any trouble condition – as long as the ignition switch is on.
Is it true that the only sensors/senders that would cause the buzzer to sound would be for oil pressure and engine temperature?
Since the oil pressure sensor is tough to access (it's tucked up under the back of the exh manifold on the port side) I guess the way to troubleshoot this would be to disconnect the water temp sensor/sender and see if the buzzing continues ... which would mean that at least the oil pressure sensor/sender is bad (and possibly the temp sensor as well)...right?
I wish I had addressed this while the ex manifolds were off...it's hard to see what's going on with the oil pressure stuff with the manifold installed.
Question: There were TWO wires for sensors/senders in the vicinity of the oil pump. I forget the wire colors (I think one was light blue?) but does anyone know what those two wires would go to? Maybe one goes to the oil pressure gauge and the other goes to the buzzer...?
Finally, is there a way to test the oil pressure and engine temp sensors with an ohmmeter? I seem to recall someone discussing that here?
Thanks for any clues. Why does everything seem to want to break down just when the tuna bite is taking off?
Engine is a 2000 PCM / GM 350 TBI with RWC