Moparmike Posted May 4, 2022 Share Posted May 4, 2022 when I unplug the oil sensor on top of the filter shouldn't the shut down light come on or shut the truck off sorry 2000 rd688 e7 400 my shut down ligh. comes on randomly and shuts down sometimes not all but fires right back up I've changed water level sensor water is full oil is full I could really use some help I haul asphalt for a living and I'm afraid it might shut down not start back up thanks Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/ Share on other sites More sharing options...
theakerstwo Posted May 4, 2022 Share Posted May 4, 2022 i thing its the way its programed to shut down or just give you a warning but maybe Len will chime in here and help. 1 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496689 Share on other sites More sharing options...
D-Day Posted May 4, 2022 Share Posted May 4, 2022 We had trouble with the 2000 CH 613 E7 460 same problem shutting down until it got worse and was difficult to get started again I had to replace the engine wiring harness and both oil pressure sensors after checking the 2 big connections at the ECM there was oil there it was being pushed through the wiring harness until it started shutting down injectors 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496693 Share on other sites More sharing options...
Vmac3 Posted May 4, 2022 Share Posted May 4, 2022 Sounds like its an intermittent problem. To answer your question, no. The ECM sees an electrical fault (open circuit). Try leaving it unplugged and see if the shutdown light turns on. Is the malfunction indicator light on? Coolant temp will cause it to shutdown as well. There should be 2 sensors at the rear of the water manifold. The one sensor at the very back of the water manifold is the coolant temp sensor. Unplug it and see if the trucks shuts down. Hope this helps V 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496695 Share on other sites More sharing options...
fjh Posted May 4, 2022 Share Posted May 4, 2022 (edited) 35 minutes ago, D-Day said: We had trouble with the 2000 CH 613 E7 460 same problem shutting down until it got worse and was difficult to get started again I had to replace the engine wiring harness and both oil pressure sensors after checking the 2 big connections at the ECM there was oil there it was being pushed through the wiring harness until it started shutting down injectors I would defiantly check this oil wicking is an issue with these !The engine harness is quite vulnerable to this! its a simple check that can save a lot of head scratching! if you find oil in the ecm spray it out with brake clean blow dri it and see if your problem is gone! and replace the harness ! thie check is simple the harness replace not so much! 🥵 Edited May 4, 2022 by fjh 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496700 Share on other sites More sharing options...
Joey Mack Posted May 4, 2022 Share Posted May 4, 2022 and then look inside the sensor plugs (sensor side) to see which one(s) is feeding the wires.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496701 Share on other sites More sharing options...
Joey Mack Posted May 4, 2022 Share Posted May 4, 2022 Mike, have you put a gauge on the oil gallery to see if oil pressure is good and stays good? jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496704 Share on other sites More sharing options...
Vmac3 Posted May 4, 2022 Share Posted May 4, 2022 Fuel diluting the engine oil. Good call Joey. V Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496706 Share on other sites More sharing options...
Moparmike Posted May 5, 2022 Author Share Posted May 5, 2022 16 hours ago, Vmac3 said: Sounds like its an intermittent problem. To answer your question, no. The ECM sees an electrical fault (open circuit). Try leaving it unplugged and see if the shutdown light turns on. Is the malfunction indicator light on? Coolant temp will cause it to shutdown as well. There should be 2 sensors at the rear of the water manifold. The one sensor at the very back of the water manifold is the coolant temp sensor. Unplug it and see if the trucks shuts down. Hope this helps V I unplug the back sensor truck shuts down Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496757 Share on other sites More sharing options...
Moparmike Posted May 5, 2022 Author Share Posted May 5, 2022 15 hours ago, Joey Mack said: Mike, have you put a gauge on the oil gallery to see if oil pressure is good and stays good? jojo no sire I've just watch gouge and its at 60psi Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496758 Share on other sites More sharing options...
Moparmike Posted May 5, 2022 Author Share Posted May 5, 2022 15 hours ago, Vmac3 said: Fuel diluting the engine oil. Good call Joey. V nothing in oil just changed it to be sure Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496759 Share on other sites More sharing options...
Mackpro Posted May 5, 2022 Share Posted May 5, 2022 I believe on your year RD, the oil pressure guage is mechanical ( braided line coming off filter stand going into cab / back of guage) . The engine ECM could care less about the guage , its looking at the signal coming from the oil pressure sensor. Without at diagnostic reader of some sorts ( JPro , tech tool or the old VMAC 3 program) you can’t see what oil psi the engine ECM is seeing even though your guage reads good. Most trucks your year were only set to shut down on low oil pressure or high water temp. But the low coolant level shut down could also be turned on as well . Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496761 Share on other sites More sharing options...
theakerstwo Posted May 5, 2022 Share Posted May 5, 2022 I saw one RD that had same problem and it was found to have a bad or loose connection in the harness pass thru connector on right side firewall. 1 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-496776 Share on other sites More sharing options...
Moparmike Posted May 11, 2022 Author Share Posted May 11, 2022 I unplug the sensor on the top of the oil filter light hasn't been back on yet no oil in the plug plug looks great going to try a new sensor see what happens thanks guys will keep you informed Quote Link to comment https://www.bigmacktrucks.com/topic/69651-oil-pressure-se/#findComment-497388 Share on other sites More sharing options...
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