2011 isx code 2372 dtc engine surging

[Rawze]

(06-30-2025 )Jugg528 Wrote:  Code 2372 customer stated unit started surging inspected fuel filter found debris in fuel filter found a chunk of something in the feed line blocking 90% of the line ran clear hose found unit sucking air ran auxiliary fuel line. unit still surging at idle
up to 1500 RPMs past 1500 rpms smoothes out. Removed metering and timing blocks inspected found out of spec replaced with Cummins reman unit still surging throwing 2372 code??

What is the enigne ser#?. Make/model truck?... etc.etc.? and maybe some history of when it started, etc?.

Did anyone bother to do a proper injector leak test on it?.

Did anyone bother to do an over head valve inspection and adjustment on it?.

Did anyone bother to do basic tune-up work to it like replacing IMAP, exhaust BP, and other old sensors, clean piping out, do CAC leak tests, turbo inspections.,.. etc.etc.etc.?/.


and if trash was found in a fuel line fitting.. then the whole fuel line system and IFSM, etc. needs to be torn apart and cleaned out, flushed, etc.

and last but not least... is this engine deleted?.. (de-mandated)? .. because if so, that could be causing the surging,.. or greatly contributing towards the surge issue.. hiding the actual cause of faults,..etc.. and/or creating a ghost issue. - If it is then copy the program from the ecm and e-mail it to me for a review of what someone has done in there, as more then 90% of all delete programs are harmful trash.