Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 01-13-2019, 09:55 AM   #21 (permalink)
EcoModding Lurker
Join Date: Oct 2013
Location: Amherst, Ohio
Posts: 15
Thanks: 0
Thanked 2 Times in 2 Posts
You don't need to power the fan to turn it on, you can simply ground the fan relay
via a switch in the cabin if you want a manually turn it on and off.
I've added a manual fan switch to a few cars I race at the track.

On my 2017 Ford Fusion it does throw a "soft code" when I scan the PCM but
has never thrown the check engine light.

  Reply With Quote
The Following User Says Thank You to Keito For This Useful Post:
California98Civic (01-19-2019)
Alt Today
Popular topics

Other popular topics in this forum...

Old 02-28-2019, 05:54 AM   #22 (permalink)
Master EcoModder
Ecky's Avatar
Join Date: Dec 2011
Location: Vermont
Posts: 3,496

Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 23.93 mpg (US)

K-sight - '00 Honda K-sight
90 day: 40.97 mpg (US)
Thanks: 1,285
Thanked 1,427 Times in 906 Posts
Originally Posted by bruno View Post
I want to disable the fan and spray water on the radiator.
My advice would be to leave the fan's control in place, and to have a water jet that comes on at a lower temperature. So long as the water is functioning, the fan should never come on.
  Reply With Quote
Old 02-28-2019, 06:34 AM   #23 (permalink)
Master EcoModder
teoman's Avatar
Join Date: Jan 2017
Location: Istanbul
Posts: 996

A3 - '12 Audi A3
Thanks: 49
Thanked 130 Times in 110 Posts
I am working on this.

It will take a lot of time for me, but ill get it done.

Ill post some updates.
  Reply With Quote
Old 02-28-2019, 10:59 AM   #24 (permalink)
Master EcoModder
Piotrsko's Avatar
Join Date: Sep 2013
Location: 1826 miles WSW of Normal
Posts: 708
Thanks: 28
Thanked 162 Times in 138 Posts
Probably the fastest way to mod this is get a different temp sensor. Afaik, there is no actual requirement to test coolant temps for smog compliance, only to ensure that at some temperature the engine is effcient and in closed loop. A higher temp thermostat might work, but I am unsure of that concept in practice

Hopefully you dont have to take the front of the car off to change it like my old ford focus
2000 F250 7.3 CC 20+ MPG @ 10000 #
2013 Golf tdi 47.5 mpg neutered, summer fuel
1988 Ranger EV Volt batts>> 17,000 MPG and climbing. Apart for rebuild.
  Reply With Quote
Old 03-06-2019, 11:40 AM   #25 (permalink)
Cyborg ECU
California98Civic's Avatar
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 5,211

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 64.33 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 1,853
Thanked 1,551 Times in 1,056 Posts
Originally Posted by Ecky View Post
My advice would be to leave the fan's control in place, and to have a water jet that comes on at a lower temperature. So long as the water is functioning, the fan should never come on.
Yeah. I think this is good advice. When you run out of water in a place where you can't get any more, you will want that computer to turn that fan on automatically. Seems like a good redundancy.


See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com