2011 Cummins ISX15 engine derated
02-24-2016, (Subject: 2011 Cummins ISX15 engine derated ) 
Post: #7
RE: 2011 Cummins ISX15 engine derated
The DEF pump on the 2015 Freightliner I'm running failed last week and did the same thing. I was dropping 1 more gear because of derate even when empty.
Only 50k miles on truck. Replaced the pump and now everything is fine.


User's Signature: 2010 386 Pete CM871, 13 spd. 3.55
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RE: 2011 Cummins ISX15 engine derated - in2trux - 02-24-2016



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