boatrboy
Well-Known Member
I’m a newbie to the Diacom so take it easy on me….
My stbd motor has always idled 10 rpm higher than spec of 650 rpm. Using my new laptop set up I tried to diagnose this. I even changed the IAC valve with a spare new one I have onboard.
I checked the throttle cable and the reading of the throttle position sensor as this keep the port engine running higher and after a cable adjustment that motor runs perfect at 650 rpm.
The IAC “duty cycle” on the problem motor reads 0. But on the port motor it reads ~24%.
I saved a couple of files running and backed up all the data on both motors to have the files on my laptop.
I then did an IAC “test” and I increased the value and decreased the value on the test screen and no change at all to the idle.
Both motors run perfect. I just had the cool fuel upgrade with all new complete cool modules and all new injectors and I was hoping one of the injectors was contributing to this (wishful thinking) bit I guess not.
Any thoughts?
My stbd motor has always idled 10 rpm higher than spec of 650 rpm. Using my new laptop set up I tried to diagnose this. I even changed the IAC valve with a spare new one I have onboard.
I checked the throttle cable and the reading of the throttle position sensor as this keep the port engine running higher and after a cable adjustment that motor runs perfect at 650 rpm.
The IAC “duty cycle” on the problem motor reads 0. But on the port motor it reads ~24%.
I saved a couple of files running and backed up all the data on both motors to have the files on my laptop.
I then did an IAC “test” and I increased the value and decreased the value on the test screen and no change at all to the idle.
Both motors run perfect. I just had the cool fuel upgrade with all new complete cool modules and all new injectors and I was hoping one of the injectors was contributing to this (wishful thinking) bit I guess not.
Any thoughts?