If the alarm sounds at around 2000 but stops if you raise the rpm above
3000 then the basic oil warning system is working. That leaves either a
bad high pressure switch or you really have low oil pressure.

Mark

John Rodgers wrote:
> Got my water pump changed out finally, and the water cooler installed with
> new hoses and seal, fresh oil change and Mann filter. Now the oil pressure
> light AND warning horn go off, just crusing anywhere. Smooth road, rough
> road, fast or slow, it just happens. It's just for a few seconds then all
> is well, seemingly, but it gives me a heart attack enery time it does that.
>
> Anyone have any ideas as to what this might be.
>
> The connector was cleaned then brushed with a wire brush to ensure good
> metal to metal contact before being hooked back up.
>
> John
>