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 2015 BB T3RE Stall/hard/no start
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OxDiesel-Doc
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Posted - 08/30/2016 :  09:18:41 AM  Show Profile  Visit OxDiesel-Doc's Homepage  Reply with Quote
I have a 2015 Blue Bird T3RE with a Cummins ISL-G (cng) engine, the bus will intermittently stall while on a route and have a hard time starting back up and most of the time I need to clear the ECM of the Inactive codes to be able to start it up again.The codes that come up with the scanner are not cummins codes I believe they are Blue Bird OEM codes. They are:

SID 231 - FMI 9 SAE J1939 Datalink
SID 66 - FMI 4 Ignition Control Mode Signal
SID 67 - FMI 4 Ignition Control Timing Signal

The codes will become active and the stop engine light will illuminate when the bus stalls.

I have replaced the ignition drop out relay, and check all the wires and harness grounds and have had no luck finding the problem. Anyone have experience with this?
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