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Unread 10-05-2021, 07:31 PM   #1
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Danfoss Controller Option

I thought I would give an update on the Danfoss fan controller option I installed a few years ago. After approximately three of years of running and over 14,000 miles I have had zero issues with it. I have climbed the rocky mountains in both the USA and Canada without a single overheat issue. The primary reason I 'm writing this is to boast about my fuel milage improvement. With my old, original, Danfoss controller I would consistently get between 6.4 to 6.5 mpg. Now my average is between 7.4 to 7.6 mpg. This has exceeded my expectations in performance & fuel economy.
Sincerely,
CC Rider
2005 Inspire Siena, 400 Cat C-9 Engine, Towing a Jeep Grand Cherokee
PS: I am not trying to convince anyone into this system, I am just reporting my results.
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Unread 10-06-2021, 08:53 AM   #2
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Wax Valve is better option. Lots of ways to get better mileage, you could buy a Prius.
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Unread 10-06-2021, 01:48 PM   #3
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Ron, I can add my experience to yours...

I have driven about 700 miles since the mod, climbed shasta mountain from Oregon towards south, no issues. I haven't logged enough miles to attest the mileage improvent, but I have noticed that my fuel level indicator used to stay at right below than 1/2 after 400 miles driving, the last time I filled up at Costco in Medford and arrived in San Jose I still had 5/8 left over; that was 425 miles stretch. I know it's not a correct way to measure the fuel economy, but I could tell the difference and I couldn't be happier.
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Unread 10-06-2021, 01:50 PM   #4
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RonandSuw74

Thank you for the feedback. A thoughtful gesture and the 3 year "test" gives it some authenticity.
What does your improvement consist of? All electronic or?

Thanks!
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Unread 10-06-2021, 05:25 PM   #5
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Quote:
Originally Posted by Boomper View Post
RonandSuw74

Thank you for the feedback. A thoughtful gesture and the 3 year "test" gives it some authenticity.
What does your improvement consist of? All electronic or?

Thanks!
Concur! And glad they've improved the software!

I had no problem with the Wax Valve on our ISL, liked it and I felt more power to wheels, and about .5MPG higher MPG..

That being said, it's great to have options!

Thanks,
Smitty
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Unread 10-07-2021, 08:05 AM   #6
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Fuel Improvement

Boomper, Electronic, it's based on my ScanGauge. Although, it's backed up by my fuel gauge. When I track miles driven I do have more fuel left in my tank than I used to.
CCRider
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Unread 10-07-2021, 10:24 AM   #7
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what

Jerry Seinfeld says......
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Unread 12-05-2021, 05:25 PM   #8
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NEVERMIND... found your original thread on this.

====

Was this a do it yourself project? I believe I have the Danfoss on my 08 Allure and the fan is defaulted to high speed.

I would like to replace with a new DF controller too. Any tips for ordering?
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Unread 12-05-2021, 08:46 PM   #9
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NEVERMIND... found your original thread on this.

====

Was this a do it yourself project? I believe I have the Danfoss on my 08 Allure and the fan is defaulted to high speed.

I would like to replace with a new DF controller too. Any tips for ordering?
I think you can get the controller from Whitehouse Products UK..the fan motor too.

Ch
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Unread 12-06-2021, 08:16 PM   #10
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I have gotten mine from https://www.bfpna.com/ .
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Unread 12-30-2021, 07:29 PM   #11
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Since my mod I have had 3 tank refills and the average fuel economy improved by 0.8 mpg (from right about 8.0 to 8.8). Now my engine runs much quieter and smoother; on a flat road in 62-65mph I noticed that the engine was frequently wandering around 27-40% load. Very happy with the result.

Happy trails!
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Unread 12-31-2021, 12:35 PM   #12
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To previous post from TTD. 08 Allure should have the controls in the ECM. you may need to look at sensors if the fan is on high
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Unread Yesterday, 03:25 PM   #13
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I have purchased kit from Source Engineering and trying to figure which line is P and which is T. My lines are not marked going into Sauer Danfoss Controller. Any help would be appreciated it seems like the older I get the brain just don't work like it used to.
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Unread Yesterday, 07:52 PM   #14
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I have purchased kit from Source Engineering and trying to figure which line is P and which is T. My lines are not marked going into Sauer Danfoss Controller. Any help would be appreciated it seems like the older I get the brain just don't work like it used to.
P port on top of existing controller
T port on the side of existing controller

Bill
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