Cummins QSB 5.9
- Thread starter DTBrad
- Start date
The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
twistedtree
Guru
Maybe a trolling valve on the transmission? Otherwise i have no idea.
Edelweiss
Guru
Must be this (below) which is listed under Cummins MecCrusier engine spec's that he's referring to. . . . way to new for my knowledge base?
Sea Cruise Package: Includes backup throttle, digital
interface, engine synchronization, cruise control, idle
speed control and slow idle.
.
.
Sea Cruise Package: Includes backup throttle, digital
interface, engine synchronization, cruise control, idle
speed control and slow idle.
.
.
Alex F
Senior Member
From what I've seen "slow idle" is the option that drops idle RPMs from 600 to 550 (on Cummins QSC 500s). This allows smoother shifting while docking and obviously travel a bit slower in close quarters.
Trolling valves is something different. The name kind of speaks for itself. The RPMs don't change, but the transmission ratio changes and the props spin slower allowing cruise much slower which is adequate for fishing.
Trolling valves is something different. The name kind of speaks for itself. The RPMs don't change, but the transmission ratio changes and the props spin slower allowing cruise much slower which is adequate for fishing.
