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Jeep grand cherokee 2007 fan control

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Moderator: mikel

Post Sun May 21, 2017 5:11 pm

Posts: 4
Dears

I have Jeep GC WH 5.7 2007 which has hydraulic cooling fan. I installed 180 thermostat and I need to set the fan set points to lower degree. It seems that the trinity fan control is missing for this particular model. some guys said that it can be adjusted by HP tuner application by setting the fan type to PWM and then set a parameter "desired engine temperature" to the desired degree. the stock setting is 103 Celsius and I want to change it to 95.
I own the Trinity and I hope it can support this feature.

Post Tue May 23, 2017 12:16 pm

Posts: 55003
Location: DiabloSport World Headquarters

so is it a mechanical fan or electric?
Post the backup and last tune written files from your device please.
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST

Post Tue May 23, 2017 4:39 pm

Posts: 4
mikel wrote:
so is it a mechanical fan or electric?
Post the backup and last tune written files from your device please.



It is mechanical rotating by the power steering fluid pressure. but the ECU controls the solenoids to control the speed.
Attachments
PCM_05094636AG_Perf_91oct_modified.drg
Current tune loaded
(3.25 KiB) Downloaded 177 times
PCM_05094636AG.drg
Original Backup file
(84.6 KiB) Downloaded 165 times

Post Wed May 24, 2017 8:22 am

Posts: 55003
Location: DiabloSport World Headquarters

m_elkhishin wrote:
mikel wrote:
so is it a mechanical fan or electric?
Post the backup and last tune written files from your device please.



It is mechanical rotating by the power steering fluid pressure. but the ECU controls the solenoids to control the speed.

the fan settings are all lowered quite a bit in the tune, so if thats not affecting the fans its not likely something that can be controlled in the same manner as the electric fans.

Thanks
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST

Post Thu May 25, 2017 3:22 am

Posts: 4
mikel wrote:
m_elkhishin wrote:
mikel wrote:
so is it a mechanical fan or electric?
Post the backup and last tune written files from your device please.



It is mechanical rotating by the power steering fluid pressure. but the ECU controls the solenoids to control the speed.

the fan settings are all lowered quite a bit in the tune, so if thats not affecting the fans its not likely something that can be controlled in the same manner as the electric fans.

Thanks


Dear Mikel
Thanks for your feed back. the following is a reply from a jeep owner on other forum. he is describing how he solved the issue. I hope that can help finding a solution.

At last got my Jeep's hydraulic fan to now work as I want.
Used HP Tuner and set the low, med/high activation temps etc, but still did not go to high speed when reaching 100 C as set.
Today went back to the guy who does my tuning and found following:
three hydraulic fan types:
1. two speed
2. three speed
3. pulsed modulated

My Jeep has the pulsed modulated and thus the low/high temp limits are not the controlling settings. There is a selection where the required engine temp must be set, then the fan will attempt to maintain this set temp. Fan speed ramps up to full speed if required to keep this set temp.
The default on my Jeep was 103 C. Brought this down to 95 C and now works like a charm.

Post Thu May 25, 2017 7:38 am

Posts: 55003
Location: DiabloSport World Headquarters

let me see what we can find on this.
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST

Post Sun Jun 18, 2017 8:05 pm

Posts: 4
Hi Mikel

did you find any way to solve this issue?

Post Wed Jun 21, 2017 9:18 am

Posts: 55003
Location: DiabloSport World Headquarters

Nothing yet unfortunately.
Mike Litsch
Powerteq Customer Service Manager
Diablo Tech support by phone:
561-908-0040x4
M-F 8:00 AM to 5:00 PM EST

Post Wed May 01, 2019 8:56 am

Posts: 1
any word on this? i am running into the same issue and i really would hate to switch over to hp tuners since diablosport is so user friendly.
_______________________________________
2010 Jeep Commander Limited 5.7 2wd
CAI, 6.4 intake manifold, obx long tubes, custom catback, UPR catch can
Jay Greene tuned
eibach lowering springs on 20x10 SRT spider monkey's


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