island8

Not sure if it's the same type of surge, but we seen this happen on a vp pump that finally threw a p0370 code. Took around 3-4 months for the code to come out, first it surged only on rare occasion at higher rpm's, progressively getting worse, then it finally died.

Sorry guys didn't no

Here's an update status on da so vp44 pump: http://www.cumminsforum.com/forum/98-5-02-powertrain/1370761-vp44-advice-help.html Posted it on cummins forum

Yes sir trying to get DAP to approve me to ship it back. Hope it goes well

Pressure was 20psi with the HO pump and never had a problem. We would have thrown the HO back in but it was sold to a customer. Dropped the pressure all the way down to 14psi on the SO, and it's still hard starting. Do you think this is a bad reman pump from DAP, I'm trying to work with them to take the pump back and fix it.

It will start if pump is cold

Changed out a perfectly running HOVP44, for a SOVP44. Reason for the change was to help out in the top end, truck specs are: 2002 ram 2500, BD R700 twins, SAC 7x12 injectors (DAP), Airdog 200, springs & pushrods, arp 425's. We can't seem to keep the truck running now, impossible to start when hot, (starts fine cold), and if we immediately let off the throttle it dies. The SOVP44 was purchased from DAP. Batteries are brand new, full tank of fuel, no codes, timbo apps reset, blead the whole fuel system 4 times (high n low pressure), tried dropping the fuel pressure from 18psi all the way down to 12psi, no help, also pulled the Airdog fuse. Any advise would be greatly appreciated!!