PO 198

[rono]

Engine oil temp to high. I was watching the temp and the coolant temp was 175, and the oil temp was 127, oil psi 45. Then oil temp went to -- <122 and the psi went to 77, going 50 mph, rpm 1500. Stopped and the temp stayed the same, psi dropped to 45.

Started driving again and about 5 minutes later coolant temp was 188, oil 165, psi was 48.
Stopped and all stayed the same except psi dropped to 19 at idle.

Do you think bad sensors, loose wiring .... What?

Thanks in advance.
Ron

 

[crash68]

The oil temperature sensor and associated wiring is where I'd start looking first. Just like the Cummins the oil pressure on the EcoDiesel dash is a calculated value based on engine rpm and oil temperature. The Cummins however doesn't even have an actual oil temperature sensor.