TimberJack Posted Thursday at 02:34 PM Share Posted Thursday at 02:34 PM 2008 CHU with MP8 keeps popping up low coolant and derate with the tank full. I’ve replaced the tank, sensor and short harness. It only pops up when you come to a stop. Once you get to rolling it will sometimes go off but normally you have to cut the key off and wait a few minutes. Does any have wiring diagram? Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/76344-low-coolant-alarm/ Share on other sites More sharing options...
mowerman Posted 7 hours ago Share Posted 7 hours ago Sorry I can’t help you but we had a brand new Volvo that was doing the same thing went back to the dealer three different times. I can’t figure out what’s the matter with it biggest problem. It completely shuts down and it’s had to be towed back a few times best of luck to you. Somebody here might have an answer…. Bob Quote Link to comment https://www.bigmacktrucks.com/topic/76344-low-coolant-alarm/#findComment-589815 Share on other sites More sharing options...
Joey Mack Posted 7 hours ago Share Posted 7 hours ago Did you follow the wires freom the sensor and look for damage ? Maybe set your DVOM to ohms, and check the harness pins to a known good ground. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76344-low-coolant-alarm/#findComment-589824 Share on other sites More sharing options...
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