Originally Posted by Pappajohn
if there was an oil pressure sender, even a simple 'pressure/no pressure' version, then surely the dash warning would remain lit until the engine was started and oil pressure attained.
as it is, the light comes on, with ign on, then goes out before engine start-up which points to a level switch with pre-start 'lamp test' function.
Never thought about it as described above, but your spot on.
Oil Warning Light should stay on until engine started and pressure is built up.
Could be programmed out of ECM and not armed until engine starts but that wouldn't really make any sense.
Wonder what the Hemi does Ray. Does Oil Warning light stay on after initial lamp test until engine starts and pressure established ?
As said above on the diesel, Oil Lamp is out before engine turns over.
By the way: The fixed reading on the diesel EVIC of 115 is actually "Kpa" not PSI . This converts to about 16.5 PSI