Medium and Heavy Trucks
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Do you have engine faults for low oil pressure. !0 PSI is the min at idle. In these situations you need to hook up Cummins Insite and monitor the oil pressure that the ECM is seeing than check with a mechanical gauge under the same conditions that you checked with Insite. write all that down and check the gauge on the dash. The ecm is set to trip faults when oil pressure is low. and this test of all 3 locations isolates a sensor problem,a dash gauge problem or a real mechanical issue with the engine. Make sure the oil is not diluted or passed its life span and change if needed When the oil gets hot it thins out and old oil or contaminated oil thins faster and more. Do the oil pressure checks first to get a base line reading prior to changing oil and filters.
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