hey all new to this site. i have a 2002 ram 2500 5.9 cummins and i had a new injector pump and lift pump installed and it still has no power past half throttle. anyone have any ideas? would be very greatfull for any help. im about out of hair to pull out I have installed a boost gauge and getting 20psi at full throttle running down the road.

 

APPS perhaps?

 

Does the power seem to cut out when you reach 20 psi? What kind of modifications do you have to your truck. An APPS reset, possibly adjustment may be in order.

 

no mods all stock rpms are there and boost is all there but after half throttle it seems to just die out. is the apps adjustable? when u go past half throttle it jumps like its going to take off but it dosent.

 

APPs

 

APPS Reset Procedure
This procedure has shown to help 24 valve ISB engines. It is basically teaching the fly by wire accelerator on these trucks to reread the position of the pedal and it's limits. Most complaints this will help with is poor acceleration, improper shifting, bucking in 5 and 6 speeds. Has been known to increase fuel mileage in some instances.

1. Set parking brake
2. Disconnect negative battery cables on both batteries
3. Turn ignition key to run(to drain any remaining capacitors)
4. Let truck sit for 30 minutes( this is the recommended minimum)
5. Return ignition to OFF position
6. Reconnect both batteries and secure, not a timed event
7. Turn key to run position(not start) and depress accelerator pedal slowly all the way to the floor
8. Allow pedal to return to top position slowly
9. Turn ignition switch OFF
10.Release parking brake



https://www.dieselbombers.com/24-val...-apps-adj.html

 

thanks rawillams ill give that a try