Detroit 60 cuts out lights flashing

i had an issue a while back I posted on here and the truck was cutting out down the road never can make it do it siting still, I took most the wiring apart and inspected, new throttle position sensor and few new battery cables and at the time I installed 4 new batteries and that seemed to fix the problem for a few month now i'm trucking again and it back to cutting out again and now I get a blinking red Stop Engine I counted 6 blinks the one time and then I picks up and goes again, i'm at a loss now I don't know what is can be now everything is still tight and clean batteries still check good, levels and pressures are good, seems to do it when some bumpy stretches but then I can hit some harder bumps and its fine, thought I would try once more on here before I take it into the shop
Also no codes seems to store when all this goes down

 

no I never changed those sensor I cleaned them when I was working on things before,

I took off every cable and wire I could find even cleaned the alternator connections,

that's my thought to but which one haha only seems like under a load it cuts out, it purred all the way home empty and idled fine to get loaded again, i'm gonna make another run in the morning and see how it goes

starting to think either the cam/crank sensors them selves or something in the ecm is dirty or shook, I've never done anything with it either except clean the connections