Threaded Mode | Linear Mode

Nerv · 07-09-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

Just replaced my 2013 cummins isx cm2350 turbo actuator, installed and calibrated, engine brake was completely underpowered, and engine power was reduced. I did the install/calibrate on insite again and it passed after a few attempts, it made the engine brake stronger and some power came back but still not as strong as it was before. Does it need to be recalibrated again? What could be going on?

Rawze · 07-09-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

what is boost getting up to in a hard pull?

Nerv · 07-09-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

Around max 28..

Rawze · 07-10-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

(07-09-2026 )Nerv Wrote: Around max 28..

That is a bit low. Is this the same truck that had the bad program that was repaired?.

If so then maybe it needs to be flashed back to a clean factory program, then run it 10 mins to ensure no remnants of bad programming is still caught up in that ecm left over, then send it to me again.. I will re-make it from a clean program.

Nerv · 07-10-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

Yes it was repaired but awhile ago, this is in the peterbilt, it was flashed clean then done by bengy then again by you.. then i rebuilt the engine, didnt have any issues until this actuator change.

Rawze · 07-10-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

(07-10-2026 )Nerv Wrote: Yes it was repaired but awhile ago, this is in the peterbilt, it was flashed clean then done by bengy then again by you.. then i rebuilt the engine, didnt have any issues until this actuator change.

I see that it was a few years ago. There has been several updates since then. I will send you your file again with the latest updates in it.

mikkhh · 07-11-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

Did you use torx/allen key to set the actuator lever position on turbo like it should be ? There is hole in actuator lever on turbo that is used to set the position.

Then connected actuator just to plug, run the first step of calibration that sets the correct position on actuator and then mount the actuator on turbo and then do the last step of calibration with actuator mounted on turbo.

Nerv · 07-13-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

Did the new ecm file update, just took it for a run this morning with a small load, now i have a fault 1145 spn 656 injector solenoid driver cylinder 6 - not responding or out of adjustment. I did clear all fault codes twice after flashing the new file. Not sure where to look now..

Rawze · 07-13-2026, **(Subject: Replaced isx cm2350 actuator, low power/engine )**

(07-13-2026 )Nerv Wrote: Did the new ecm file update, just took it for a run this morning with a small load, now i have a fault 1145 spn 656 injector solenoid driver cylinder 6 - not responding or out of adjustment. I did clear all fault codes twice after flashing the new file. Not sure where to look now..

== Make sure the exhaust pressure sensor itself is factory OEM.

== Make sure the exhaust pressure sensor circuit is not dirty/clogged with soot.

== What is the actual cummins fault code?.

== Make sure the engine passes a rail leak-down test same as this video...
info: https://rawze.com/forums/showthread.php?...3#pid75483

== it could be an injector or wiring harness going bad.