Oil light strange issues

[Malaking_TT]

Usually everything seems fine but every so often after it's warmed up the oil light will come on at an idle but if I shut the engine off then restart it everything is fine again. Also sometimes the oil light won't come on when the key is first turned. Engine is 4d55. I was thinking it's an electrical problem. I'll be putting a manual gauge in next weekend.

[camoit]

sounds correct

[pennyman1]

flush the sending unit out with kerosene or diesel - sludge may have lodged in the sensor and causing erratic operation, or the sender is going bad.

[wrngwae]

if your sensor is bad, it is that same as any 4g54...... been there done that. and there cheap. you could also remove that sending unit and install a mechanical in that exact spot to see what your oil pressure really is.... just for piece of mind.