QSB 6.7 idle speed

[steve lehman]

How can I reduce the idle speed on a QSB 6.7 (2013) with Glendinning controls?
Thanks.

Topic

[Tony Athens]

Dropping the idle on a 6.7

That’s a maybe………………… For sure a Cummins tech can come down and reset the idle thru the ECM to 400-500-ish .. There may also be a a provision to add a control with a rocker switch at the helm to toggle it up and down.. But that will take a few hours of research on your particular engine set-up to figure that out.. Cummins may have the option for that on the marine 6.7’s ( they had it for the QSM11 years back with SmartCraft) I am not the guy for that———–Maybe Corey?

I know my Bro’s QSB 4.5’s ( like your engine but 2 cylinders shorter) has that provision ( up or down from factory) but has a different ECM. Your base ECM will for sure have that provision, it’s whether one can get to the signal wires ( 3 of them) required to do that.

Tony

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