2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

new dual fan setup

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Old Jun 11, 2009 | 01:30 AM
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Wink new dual fan setup

Okay well we all know about the various E-fan setups and I had made my old one with mid 90s maxima dual e-fans but modifying the shroud was too much and the fans slowly became garbage.

granted it had 2 fans and 2 speeds and moved a lot of air it just sucks, so I went to the junkyard and picked up a new dual fan setup, from an audi a6 from the late 90s (v6 quattro)

so knowing audi and their love to cramming engines in small spaces I figured this would be a good set up and the beauty of it was that the stock harness had ground connectors on it that I could bolt it down.

so I have each of the dual fans wired into the stock fog light switches, turn one on or both! each fog switch is wired to a fan. the idea is to interrupt the flow of power from to the fans from the battery with a fuseable link in conjunction with the switch. You can also wire it differently by interrupting the ground circuit if you choose.

I also have my battery wired up in the trunk so I dunno if it will fit your setup if you have the battery up front still.

I had to trim the passenger side corners off of the shroud for it to fit properly which is shown in photos

for ease of instillation I removed the top oil cooler line and upper radiator hose off of the radiator side.

to mount it you need a zip tie and make a small metal bracket that has two holes in it or modify some piece of metal to do what you need to do, line this up with the radiator mounting to the fan mounting and bolt them together.

I had the wire laying around and had the fusable links and fuses so this fan only cost me 30 dollars

I may wire each of them up to a thermo switch and have them come on at different temperatures, but we'll see





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Old Jun 13, 2009 | 02:28 PM
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I had stop and go traffic in the heat yesterday and these performed beautifully! they are pretty loud though and when they are both on and you can feel the heat getting blown to you, but I also have a vented hood so thats where its coming out from. lol
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Old Jun 13, 2009 | 07:36 PM
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Looks nice...you should try and do something about the wiring though, its just kind-of out there lol. Some temp numbers in different settings would be sweet too.
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Old Jun 13, 2009 | 07:51 PM
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Constantly monitoring the temp and switching fans on and off will get old pretty quickly...get thee a thermoswitch soonest.
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Old Jun 13, 2009 | 08:20 PM
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Originally Posted by Elbi
Looks nice...you should try and do something about the wiring though, its just kind-of out there lol. Some temp numbers in different settings would be sweet too.
that picture is of it mounted up, not wired up don't worry it is much nicer now.
warmed the car up to 200 degrees and with both kicked on it drops to around 170-175 pretty quick, I have an autometer electronic aftermarket water temp gauge set up so its not me guessing off of the stock gauge.

Originally Posted by clokker
Constantly monitoring the temp and switching fans on and off will get old pretty quickly...get thee a thermoswitch soonest.
I've done for so long its second nature but yes this is only a temp setup, the whole gauge cluster is getting "renovated" along with the thermoswitch

the fans are very loud but effective.
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Old Jun 13, 2009 | 08:25 PM
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Thermoswitch is easy...real cheap if you know where to look (lots of cars have them stock). I'd wire one up to the switch and one up to the AC condenser if you still have AC.
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Old Jun 13, 2009 | 08:27 PM
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You know 210 is like the limit before coolant seal failure right?...its cool that it works really effectively but i get a little uneasy whenever my temp starts to pass 190 lol...maybe I'm just paranoid. Good job on the find though...
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Old Jun 13, 2009 | 08:28 PM
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i think im gonna hit the junkyard tomorrow for a clean electric fan setup, the stock fan and shroud **** me off every time i open the hood.
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Old Jun 14, 2009 | 10:27 AM
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210 is not the limit for seal failure. 210 is a bit hot, but not dangerously so.

As for the manual switch, that's kind of crazy. Set up a dual level thermostat switch. One fan should be on a switch that kicks on around 88-90 degrees, then the next fan should come on at around 95 degrees. Having to constantly watch a temperature gauge and decide to turn on the fans is nuts. I can't imagine how someone could drive a car like that.
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Old Jun 14, 2009 | 11:58 AM
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Originally Posted by Aaron Cake
Having to constantly watch a temperature gauge and decide to turn on the fans is nuts. I can't imagine how someone could drive a car like that.
It's called "multitasking" and I understand that all the cool kids do it today.

Having to monitor and control the fans would really cut into one's texting and DVD watching time though.
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Old Jun 14, 2009 | 01:04 PM
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Originally Posted by clokker
It's called "multitasking" and I understand that all the cool kids do it today.

Having to monitor and control the fans would really cut into one's texting and DVD watching time though.
But make sure you take your Ritalin so you don't get off-task!
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Old Jun 14, 2009 | 01:39 PM
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Originally Posted by Aaron Cake
210 is not the limit for seal failure. 210 is a bit hot, but not dangerously so.

As for the manual switch, that's kind of crazy. Set up a dual level thermostat switch. One fan should be on a switch that kicks on around 88-90 degrees, then the next fan should come on at around 95 degrees. Having to constantly watch a temperature gauge and decide to turn on the fans is nuts. I can't imagine how someone could drive a car like that.
I'm debating doing just 1 on toggle and one on thermoswitch so if the car is off and I want to cool it down I can still can, I keep temps around 175-195.

and no my car was lucky to never have AC or PS

ive been doing toggle switch fan for about 2 years now, it just becomes second nature I guess. My car is rough on the street regardless, solid motor/trans mounts and aluminum flywheel it doesn;t like to go below 30 very well lol If these fans don't have different speeds they are both full blast so having them both kick on would probably overcool my engine since heat doesn't stay long in my engine bay with the vented hood

what cars have them stock? I was just going to pick one up from autofart for 15 dollars but I need to make a run to the junkyard anyways for a hatch strut for my wagon so I can always snag it when I'm there

so what is the coolant seal failure temp level?
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Old Jun 14, 2009 | 01:45 PM
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[QUOTE=

I may wire each of them up to a thermo switch and have them come on at different temperatures, but we'll see

[/QUOTE]

Hmmmmm, and why didnt you do that in the first place??
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Old Jun 14, 2009 | 01:51 PM
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Originally Posted by nate91242
Hmmmmm, and why didnt you do that in the first place??
money, time and existing wiring.

the switches were in the center console and the wiring to the battery in the trunk was already there

my old setup was a maxima 3.0 v6 fans but it required too much hacking of the shroud and the fans eventually fell apart (in a matter of words)

oh and just to **** you off :P [/sarcasm]
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Old Jun 14, 2009 | 02:08 PM
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what kind of alternator you running and do you see a significant voltage drop when the fans kick on
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Old Jun 14, 2009 | 04:58 PM
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Originally Posted by jfpimp91elkland
what kind of alternator you running and do you see a significant voltage drop when the fans kick on
upgraded to the S5 one and they each take a 1v drop (according to the gauge cluster voltmeter) but I'll have to check it with my DVOM
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