Cm 870 egr

[marek4792]

(05-26-2020 )Log lugger Wrote:  Thanks for the reply,did not clean delta p tunes or change that sensor but I will asap.I did put a new control box on for the turbo and air line as well arm movement is stiffer than I'd like but it does go to full stroke @60psi

Unbolt the actuator from the turbo and check if the arm on the turbo itself travels freely. If not it maybe time to replace the turbo. I had a similar issue to what you had except my turbo was rebuilt and improperly clocked causing the vg vanes to hang up with the same symptoms you mentioned. In your case it would be from soot packing.