Fan control

Discussions concerning the M7790 cpu

Moderator: Matt

Post Reply
Tommey
 

Posts: 31
Joined: Thu Jul 31, 2014 7:30 am

Fan control

Post by Tommey »

I would like to know what to do to get my fans to work as i want.
With these settings, the fans are on all the time as long as the enigne is running.
Ideally i would like them to run when coolant hits 85c regardless of vehicle speed.

I have tried the active tests, and i cannot get them to run individually.
Not that it is a big deal.

I have tried alot of different settings, help would be appreciated!
Attachments
Fan control.jpg
(266.4 KiB) Downloaded 2069 times
Matt
Site Admin
 

Posts: 8961
Joined: Sun Jan 29, 2006 1:45 am
Location: Adelaide, Australia
Contact:

Re: Fan control

Post by Matt »

Have a look here - page 11
https://www.nistune.com/docs/Nistune%20 ... k%20V1.pdf

Make speed params 20, 80 = 511 to not use them

So then just working from 0 - 510km/h with first row and 33 = high fan enabled. Then set suitable temps

Right now you have 70-75 degC across the top so they are on all the time. Start from 85 degC perhaps
Tommey
 

Posts: 31
Joined: Thu Jul 31, 2014 7:30 am

Re: Fan control

Post by Tommey »

I`m still having issues with this.
When i run Active Tests no fan runs on High Speed, but both fans run on Low Speed.
Is this normal?

I can also only get my fans to be on always or never.
No fans.jpg
(217.05 KiB) Downloaded 1670 times
One fan.jpg
(223 KiB) Downloaded 1670 times
Both fans.jpg
(220.61 KiB) Downloaded 1670 times
Matt
Site Admin
 

Posts: 8961
Joined: Sun Jan 29, 2006 1:45 am
Location: Adelaide, Australia
Contact:

Re: Fan control

Post by Matt »

Yes the 80F00 ROM image only runs one fan by default

Two fan outputs can be run however:

83F00 (ADM)
Feedback Switch 3: Bit 2 (04) Enabled single fan. Disable two fan

82F00 (EDM) /80F00 (JDM)
Feedback Switch 3: Bit 0 (01) Enabled (Fan 2 disable)
Feedback Switch 3: Bit 3 (08) Enabled (Fan 1 + Fan 2 disable)

Remember you need to set the table flags to 33 (raw) currently you have them set to 22
Tommey
 

Posts: 31
Joined: Thu Jul 31, 2014 7:30 am

Re: Fan control

Post by Tommey »

Im confused , it does not seem to be the same as you are describing.
Feedback Switch 3: Bit 0 (01)
Feedback Switch 3: Bit 3 (08)
It`s not there.
Feedback switch 3.jpg
(103.06 KiB) Downloaded 1569 times
Matt
Site Admin
 

Posts: 8961
Joined: Sun Jan 29, 2006 1:45 am
Location: Adelaide, Australia
Contact:

Re: Fan control

Post by Matt »

Bit 0 is same position as 'long term trim' on your display
Post Reply