Ali Witte Posted October 26, 2022 Share Posted October 26, 2022 2009 Mack randomly shutting down. When it shuts down the ABS throws a code for no communication with ECM, ECM is getting voltage but not communicating. If you cycle the key a few times the ABS light goes away Wondering if anyone else has had this problem? I am thinking it is either an issue with the J1939 datalink or a problem with the VECU but I am unsure on how to test the VECU. Any help is greatly appreciated. Quote Link to comment https://www.bigmacktrucks.com/topic/70620-2009-mack-gu713-with-mp8-engine-dying-out-randomly/ Share on other sites More sharing options...
Mackpro Posted October 26, 2022 Share Posted October 26, 2022 Start with the simple stuff , battery cables being tight . Anything the bed Company added on the batteries ( electric tarp motor cables) . Is the engine dying or just derate/dead throttle pedal? Quote Link to comment https://www.bigmacktrucks.com/topic/70620-2009-mack-gu713-with-mp8-engine-dying-out-randomly/#findComment-513595 Share on other sites More sharing options...
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