Check engine light and oil light

[Frank5229]

I have a 93 cummins.
It's a 330hp. N14

Check engine light comes on and off.
Truck runs normal. All fluids are normal.
What could be the cause??

Oil light stays on all the time. Previous owner had light on for many years. He had no problems. Oil pressure is running 50 psi cold at idle. When warmed 25-30psi.

Can somebody please help.
This is the first freightliner and cummings I'm dealing with.

Thanks,

[Biscuit75]

Oil pressure seems to be running what all N14's I've driven have run at. As far as the indicator lights,

I would recommend if you can afford to, have a dealer or Cummins shop check the computer. Maybe have a bad wire to a sensor or bad sensor itself.

[truckersrstupid]

Don't take it to Cummins. The oil light in the older Freightliners was not controlled by the ECM in most cases. Freightliner liked to run a seperate switch/sender for the dash warning lights. Cummins would likely pull it in, do a walkaround and then put it back outside, giving you a small bill and the directions to the nearest Freightliner dealer. It could be a wire, switch/sender, or even a vigil bar (the latter not being inexpensive). Just count yourself lucky the unit doesn't have a Kysor shutdown module on it.