Was wondering what it could possibly, my truck anywhere from 1800-2500 rpm seems to flutter and cut out when under a load and when put to WOT. I do not have a fuel pressure gauge on the truck. It did pull the 1693 code which i understand just tells me there are other codes, but are there any suggestions on what this could be? Sometimes this problem is bad, and sometimes you can hardly notice it. I noticed it for a day, and parked it since.

 

mine is doin the same thing. my local cummins guy told my that my ecu is going bad jus havent had time to fix it

 

Possibly low fuel pressure at those rpms. Your fuel pump may not be keeping up with the demand.

 

Is this performance related?

 

Could be your throttle position sensor. Do a search for resetting your APPS and try that.

 

My vote is for low fuel pressure.

 

mine did that to was my vp pump piston sticking when i lug it and stomp on the pedal it would surge bad but when i ease into it was no problem.