Gen 3 Electric fan Install
#1
Gen 3 Electric fan Install
Starting another install but this is one quite a few have already done. I did the electric fan install on my Gen 2 3.0 4runner about 1 1/2 years ago and it was quite the project for me. So now have decided to do this on my Gen 3 but I am running into a few snags. The radiator appears to be somewhat bigger then the gen 2 and ad to that, I tried to get the largest shroud electric I could find.
While on the hunt in another local Northwest wrecking yard, came upon this fan out of a 97 Taurus with the 3.8 V6. I was able to get the entire harness including what appears to be the OEM relay. Now the question I have about this fan is it a dual speed like the 3.0 Taurus fan? I'm kinda doubting it as the fan control wires only have 3 legs. I don't know may be it is a two speed fan. If it is, I am planning to use a rear heater fan speed select switch to control the fan speed on this electric mod. The 'LO' side will be for normal thermostat control and the 'HI' will be a manual override position which will cut out the 'LO' seting. Also I read about having the ability to turn the fan off when fording a stream. Well not too sure I will ever really need this setting but if I can figure it out that is how I will configure this set up.
I also noted that the stock Toyota shroud is quite a bit larger then the one out of the Ford. Any concerns about not covering the entire radiator? I was considering using the OEM shroud and cutting it down and then attaching it to the Ford fan/shroud. Any thoughts on this avenue?
I located the same thermo controlled relay set up which I used on my Gen 2 install. Has a selectable setting for the thermostat so you can determine at what temp you want the fan to come on. I plan on setting mine to 185 degrees. I got the harness from my local Auto Zone and with my military discount it was $34.
More to follow as I begin the process. I know I will have to manufacture some brackets but I did the same thing on my Gen 2 and it worked brilliantly.
While on the hunt in another local Northwest wrecking yard, came upon this fan out of a 97 Taurus with the 3.8 V6. I was able to get the entire harness including what appears to be the OEM relay. Now the question I have about this fan is it a dual speed like the 3.0 Taurus fan? I'm kinda doubting it as the fan control wires only have 3 legs. I don't know may be it is a two speed fan. If it is, I am planning to use a rear heater fan speed select switch to control the fan speed on this electric mod. The 'LO' side will be for normal thermostat control and the 'HI' will be a manual override position which will cut out the 'LO' seting. Also I read about having the ability to turn the fan off when fording a stream. Well not too sure I will ever really need this setting but if I can figure it out that is how I will configure this set up.
I also noted that the stock Toyota shroud is quite a bit larger then the one out of the Ford. Any concerns about not covering the entire radiator? I was considering using the OEM shroud and cutting it down and then attaching it to the Ford fan/shroud. Any thoughts on this avenue?
I located the same thermo controlled relay set up which I used on my Gen 2 install. Has a selectable setting for the thermostat so you can determine at what temp you want the fan to come on. I plan on setting mine to 185 degrees. I got the harness from my local Auto Zone and with my military discount it was $34.
More to follow as I begin the process. I know I will have to manufacture some brackets but I did the same thing on my Gen 2 and it worked brilliantly.
#2
Contributing Member
Yeah the 2 speed Taurus fans have 3 wires. One "+" for the low speed, one "+" for the high speed, and 1 ground "-" . Get the "+" and "-" mixed up and the fan will run backwards.
If it were me I'd make a shroud that covers the whole radiator. But I live in a hot area, and have extra cooling needs because of a supercharger.
If it were me I'd make a shroud that covers the whole radiator. But I live in a hot area, and have extra cooling needs because of a supercharger.
Last edited by mt_goat; 04-14-2008 at 10:04 AM.
#3
Registered User
Join Date: Oct 2007
Location: San Antonio, TX
Posts: 797
Likes: 0
Received 0 Likes
on
0 Posts
I like the idea of the electric fan mod but my truck never gets to the halfway mark even in bumper to bumper traffic down here is the middle of a Texas summer. So i kinda figure it ain't broke so I aint gonna mess with it. Plus I have to admit I do kinda like the roar when the fan clutch is engaged. I have thought about adding an electric fan i have laying around to the condensor though.
#4
Registered User
Join Date: Apr 2007
Location: San Diego, CA
Posts: 366
Likes: 0
Received 0 Likes
on
0 Posts
I have thought about the Taurus fan upgrade but the question of "Why?" comes to mind. It isn't like it gets you more power or somehow relieves stress on the engine in a significant way. It is cool though!
#5
I read about someone installing such a switch for when they ford creeks or streams as this way the fan could be turned off completely until they were clear of the water. Nice to have the capability even if I never really use it for that.
Now just have to figure out which wire goes to which speed. Also need to determine what those two 'relay' looking components are
#6
Actually what it does for you is give you that lost horse power that was being eaten up by the clutch fan. Albeit it is only about 2-3 HP but thats HP that can be doing other things when you need it. Less work to do the same job equals economy. If it nets you 1 MPG, in a vehicle that gets 17-20 thats a measurable increase. Wonder why most all race cars use electric cooling fans? It's to gain horse power! I did note improvement on my 3.0 when I did this the first time. Just MHO, but hey we do these for more then just astetics
#7
Contributing Member
Yeah, I did that too. I used an on-off-on switch with a protective cover that defalts to the "auto high" setting and hooked up a buzzer and red LED light to the "off" position, so my wife won't accidently drive with it turned off. The buzzer and light trick was done by using a normally closed relay, when power is turned off the relay turns on.
Last edited by mt_goat; 04-14-2008 at 03:32 PM.
Trending Topics
#8
Contributing Member
Here's some of what I did. https://www.yotatech.com/919669-post62.html But I have a smaller radiator than you. Maybe you could fit a Lincoin Mark VII fan, they are bigger, or dual fans
I still want your Mark VIII fan Dale
#9
Contributing Member
#11
Contributing Member
#13
Not sure what the dimensions are for the MKVIII but the Taurus 3.8 fan is 22 x 16.
The stock radiator for the 3.4 is 27 x 24. Will definitely need to figure out some sort of shroud mod to make it fully fit the radiator for maximum cooling. Any suggesitons?
The stock radiator for the 3.4 is 27 x 24. Will definitely need to figure out some sort of shroud mod to make it fully fit the radiator for maximum cooling. Any suggesitons?
#14
Contributing Member
According to this guy its 18.5 x 22 x 6 inches. The shroud can be cut down for a total depth of around 5.25" at the very minimum.
18" blade:
http://cgi.ebay.com/ebaymotors/Mark-...spagenameZWDVW
18" blade:
http://cgi.ebay.com/ebaymotors/Mark-...spagenameZWDVW
#17
Well, when Toyota make an electric fan that will do the job, I will be happy to put one on it, but let me see .... driving lights off a 99 Pontiac Grand Am, autodimming mirror from a 99 Yukon, side marker LEDs off a 2005 VW Beetle, corner lights from an 83 Honda Accord, Bosch relays, wiring from various manufacturers including BMW, I don't think an electric fan from a 97 Ford Taurus is too much of a stretch. It is an international world we live in Oh and to think the idea for putting this fan on a Toyota came on this forum ... Lions and Tigers and Bears OH MY!
Last edited by Ritzy4Runner; 04-15-2008 at 05:36 AM.
#18
Contributing Member
According to this guy its 18.5 x 22 x 6 inches. The shroud can be cut down for a total depth of around 5.25" at the very minimum.
18" blade:
http://cgi.ebay.com/ebaymotors/Mark-...spagenameZWDVW
18" blade:
http://cgi.ebay.com/ebaymotors/Mark-...spagenameZWDVW
#19
Contributing Member
No, by the time I got the Mark VII fan I had already cut up the Taurus shroud. If it helps any the motors look identical. That ebay ad above has some very detailed dimensions near the bottom (scroll down).
Last edited by mt_goat; 04-17-2008 at 07:10 AM.
#20
Registered User
Join Date: Jun 2007
Location: Phoenix, AZ
Posts: 111
Likes: 0
Received 0 Likes
on
0 Posts
Here's an older thread on installing an electric fan. The pics have been moved, but it tells you where. That's the setup in my truck.
https://www.yotatech.com/forums/f2/e...stalled-61008/
https://www.yotatech.com/forums/f2/e...stalled-61008/