coasting in neutral idle hunt

[MichaelR32GTR]

hey guys

hopefuly i can get this little annoying issue sorted

 

if i pop the car in neutral and coast down a steep hill for example, or a steep driveway etc the car hunts until i come to afull stop, or drive away normaly

 

i have attached a log of the hunt and my tune aswell

hopefing its something silly with some settings etc

 

thankyou 

 

hunting log - https://drive.google.com/file/d/1LUB1a6A9VqdWRGFzG2tcPPBzS3W8uR7-/view?usp=sharing

tune file - https://drive.google.com/file/d/1jwcuvSSOpYSVVswK5Y1IODkiv307tVrB/view?usp=sharing

 

[Adamw]

Id say it is the large variation of numbers across the top row of you E-throttle target table.  I would generally have the same number right across.

[MichaelR32GTR]

Odd thing is, it never did it until I found in my speed sources that

“driven wheel speed source” was set to average rear speed

and 

“non driven wheel speed source” was set to average front speed

 

once I changed them both to “LR wheel speed” it started doing this 

went through all settings and made sure everything speed related was running off di6 and LR wheel speed

 

also as per the previous post about speed lockout in idle speed control, I tried 10 and 20kmh like you suggested  and also the 2kmh as per default but that didn’t affect the hunting 

 

will try change ethrottle target on top row and see how that goes 

 

thanks 

[MichaelR32GTR]

On 5/6/2022 at 1:57 PM, Adamw said:

Id say it is the large variation of numbers across the top row of you E-throttle target table.  I would generally have the same number right across.

Changed to same numbers as what it idles at 1000rpm which is 5.0 across the top

a higher value from 1500rpm and up made the revs hang 

a value of 5 from 0, 500rpm made it stall

i just put them back as is and booked for a tune to iron out these little issues on the dyno 

thanks 

[Adamw]

Give us a log and I can help you.  It looks like it needed 3.5% throttle to sit on target in the last log you attached.  The stall is most likely the idle ign is too advanced so hasnt got enough torque authority to capture the stall.  

[MagicMike]

I'd turn off ignition idle control. It seems to be keeping your idle stable when active. In the log and file you posted, the speed lockout is 20kmh. As soon as the speed is greater than that everything goes weird.

Removing it could help identify other things at play.

[MichaelR32GTR]

Thanks will be back out in the car maybe Friday 

il turn it off, get a log 

 

and also get a log of it as is and see where we stand with this