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valleybusman
Top Member

USA
815 Posts

Posted - 05/07/2024 :  07:06:40 AM  Show Profile  Send valleybusman an AOL message  Reply with Quote
Driver did a trip yesterday. Batteries were dead. So, we jumped the bus. Before she left there was a warning light on. This morning, she wrote up the bus. Said when she went up a hill warning light came on. Bus would lose power. Light would go off and power came back. We have had some oil pressure issues with too high voltage. A PID 100 then too low voltage PID 100. Those weren't active. The one that did come back was a PID 94 and that happened about 9 times. I suspect this is what caused loss of power. What am I looking for and what kind of fix? Would this a filter issue? Thanks for any help

Bluenozer
Top Member

Canada
650 Posts

Posted - 05/09/2024 :  07:13:39 AM  Show Profile  Reply with Quote
could be a fuel filter, obstruction in the tank floating around causing suction issues or cracked pick up tube in tank , clogged vent in tank also
biased fuel pressure sensor or bad wiring , sucking air on the suction side can cause this also

OEM trained in wiring and all engine platforms for over 20 years
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