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Mark VIII efan question

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Old Nov 11, 2024 | 04:10 PM
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Mark VIII efan question

I FINALLY GOT A MARK VIII EFAN!!!! Those cars never show up in the local junkyards. This is only the second one I’ve found in the last five years I’ve been looking. The first one was already pretty well stripped. The fan I grabbed I need help with. The plug on the fan has three pins but the wire plug only has two wires and two corresponding pins. Is the fan two speed capable but the car was only setup to do one speed? I tested the fan by touching the wires to my battery and it seemed pretty fast. So maybe I don’t even need two speeds?





FUNNY STORY TIME

Rarely do Mark VIII’s show up in my local junkyards. I saw this one posted on their website but it’s 45-50 minutes away. I take my 14yo son with so I can spend time with him and he’s starting to get interested in cars, two birds one stone! When we are about five minutes out, it starts raining 🙄. THEN at the gate they inform us you have to be 16 to enter 🙄🙄. My son said he’d sit in the car, great kid. I get back to the gate and pull out my debt card. The kid at the gate says it’s cash only, and I have zero dollars on me 🙄🙄🙄. Back at the car, I tell my son we have to find an ATM because they are a cash only business. My son asks how much I need because he has some cash on him. Five dollars to get in and $25-$35 for the efan depending on if they charge me for the shroud or not. The kid has $100 on him! MY MAN! So I pay the entrance fee and ask where the Lincoln section is, the cashier says in the very back 🙄🙄🙄🙄. I finally make it to the Mark VIII and find the efan is already gone. DAMNIT!!!! 🙄🙄🙄🙄🙄 I double checked the website and verified this was the only Mark VIII on the lot. I needed to relieve myself, and I was all the way in the back. Why not hide behind the car and go where nobody would stand to remove anything off of the car. When I got back by the trunk, the efan was sitting there in perfect shape! After all the frustration and disappointment, I found the fan I’ve been searching for and someone did the work of removing it for me! Moral of the story, never give up and you’re never too busy to take a bathroom break. LOL
 
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Old Nov 11, 2024 | 08:18 PM
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And some FYI. "Lincoln Mk VIII two-speed fan, Taurus or Lincoln cars. A 95 Mercury villager minivan with a 3.3L V6. The stock radiator for this thing was a gigantic three core all aluminum radiator. However, the fan for this was a gigantic 19" two speed fan. This thing is massive. Bigger than a Mark viii. If anyone's interested, I did some research the 92-2002 Villager is a rebadged Nissan quest."
 
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Old Nov 12, 2024 | 01:54 PM
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Does the fan have 3 wires from the plug to the motor? If so, it is a two speed fan. Test it.
If I were you I would go straight to www.autocoolguy.com and get one of his soft start, Pulse Width Modulation controllers. For about 5 years I ran relays on my fans. Every time the fans turned on my engine would hesitate because of the spike the fans drew to turn on. Then, I tried this autocoolguy controller and I never even hear the fans turn on. Temp stays at a constant set temp. It was also easy to wire.
But, if you want to go with relays, use the Volvo relay pack. It is cheap, able to handle the amps of your fan, and, together with a bmw thermo switch, will turn your low speed on when the themp hits a certain level, then, if the temp climbs higher, the volvo controller shuts off the low speed and turns on the high speed.
You will need one with a higher amp rating.
You will need one with a higher amp rating.

This shows it wired with a kill switch for 4x4 owners for water crossings. Or, you can trigger the relay with 12v keyed power.
This shows it wired with a kill switch for 4x4 owners for water crossings. Or, you can trigger the relay with 12v keyed power.
That control relay needs to be 40/60 amp for your fan. Don't cheap out with that relay or with your wiring. That power wire needs to be minimum 10gauge wire. Good luck.
And btw, you need a 130 amp alternator. The 94 Taurus with a 3.8L engine will mount perfectly into your truck.
 
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Old Nov 12, 2024 | 02:13 PM
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F250 restorer, that controller sounds legit! I’ll have to price it out first. I currently have the 3G alternator, Volvo relay and BMW thermo switch, but I grabbed two fans from a Taurus and THOUGHT I wired the smaller one has the low temp fan and the larger one has the high temp fan. I don’t think that is working correctly bc the other day I got stuck in a drive through and it was stumbling coming out of the parking lot and actually died when I tried to accelerate. I let it sit for 30 minutes and with jumper cables it started back up and drove home just fine. Im swapping the dual fans(probably lower cfm) to the coveted Mark VIII fan. It should be a simple swap since everything else is there, right?
 
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Old Nov 12, 2024 | 05:06 PM
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A two speed Taurus or Volvo fan would produce ample cooling. The Volvo fans are nice b/c the right ones come with oem fuses attached; iirc it's 35 and 65 amp fuses for low and high. That's a lot of juice! The Volvo fans are from when Ford owned the co. There are so many versions of the Mk8 that most people don't even have one, but think they do. Anyway, good luck and have fun.
 
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Old Nov 12, 2024 | 10:33 PM
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I got my e-fan from a 96 Mercury Cougar. One of the best mods I did. I was surprised at how loud the mechanical fan was. I also only wired up the low speed. After 10 years of driving with the e-fan, I've never gotten hot.
 
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Old Nov 12, 2024 | 11:33 PM
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Originally Posted by SlikWillie
I got my e-fan from a 96 Mercury Cougar. One of the best mods I did. I was surprised at how loud the mechanical fan was. I also only wired up the low speed. After 10 years of driving with the e-fan, I've never gotten hot.
Hey there, SlikWillie. I was wondering how you turn the fan on and off? From research I have done, that fan you have is one renditions of the Mk8 fan. I imagine it moves a lot of air.
And come to think of it, my truck has never gotten hot either, and I, like you, have single speed fans. I have a dual 12" fan setup from a 2000 Contour. Although Ford had it wired so that the low speed went through a resistor, and when the ac came on, the fan got full juice, or high speed. When they jump right to high, I used to get a 70amp spike, but no longer with the soft start controller I now have.
 
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Old Nov 13, 2024 | 06:31 AM
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I got a wiring harness from eBay. It's controlled from a temp sensor that I put in the thermostat housing.
 
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Old Nov 13, 2024 | 09:44 AM
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Nice score on the fan. The Mk VIII fans are quite old now, 25-30 years, and are old tech (brushed). Other than cheap, why choose this fan?
 
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Old Nov 13, 2024 | 11:59 AM
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1. It's a Ford OEM part.
2.It moves between 4,000 to 5,000 cfm of air.
3. Can be found almost anywhere for cheap (as you stated).
4. Aftermarket is good, factory is best.
5. It has a tighter profile to the radiator compared to the two aftermarket that I tried.
 
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Old Nov 13, 2024 | 01:09 PM
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MK V!!! Fan

NAPA stocks the motors if you ever need a replacement.
 
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