Cm570 hesatation underload

[Red]

(11-06-2017 )AussieISX Wrote:  

(11-05-2017 )Red Wrote:  Hi all I have a western star 4900fx with a cummins cm570 it has intermittent hesitation under load the power drops off and then back on as quick as a light switch. Any one know if fuel solinoids will do this ?

I doubt it is solenoids/ actuators. Does it completely drop power or just limit it . Does it do it in all gears or only lower ones ?

It seems to be only under load and in any gear on the high gears mate. It completely drops power then kicks back in . It repeats this untill your coasting or back off the accelerator