07-23-2017,
Engine losing power throwing codes 4334 and derating any ideas cummins replace the Def pump went 150 miles did it again.
07-23-2017,
07-23-2017,
Is your harness in good shape? I noticed when something goes wrong with the DEF system most of the time it is electrical, but having a repeated pump failure sounds like there could be a blockage burning up the pump. Rawze posted pictures of one truck he looked at with similar complaints (and the truck owner having spent a large amount of money with no luck) that had the DEF crystallize almost blocking the pipe where the DEF injector was.
07-24-2017,
(07-23-2017 )marek4792 Wrote: [ -> ]Is your harness in good shape? I noticed when something goes wrong with the DEF system most of the time it is electrical, but having a repeated pump failure sounds like there could be a blockage burning up the pump. Rawze posted pictures of one truck he looked at with similar complaints (and the truck owner having spent a large amount of money with no luck) that had the DEF crystallize almost blocking the pipe where the DEF injector was.
that was this post...
http://rawze.com/forums/showthread.php?t...07#pid1807