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#1048212 - 02/15/17 08:14 PM Electric Fan Question  
Joined: Jan 2003
Posts: 411
runupfront Offline
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runupfront  Offline
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Eatonton, GA
I have available to me a dual electric fan setup out of a 1995 Z28 for $50.

Does anyone have any experience with these fans and the setup?

Is this a good install candidate for a 1986 Monte or is it not worth the effort?

I really wanna get rid of the mechanical fan. Is there a better / easier setup to look for? Keep in mind - pretty wimpy budget here.


Pete Scuderi
1986 AeroCoupe
#1048213 - 02/15/17 08:49 PM Re: Electric Fan Question [Re: runupfront]  
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Hunter79764 Offline
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Hunter79764  Offline
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Grand Prairie, Tx
Pretty decent deal, I think I paid $100 for mine. Good fans, pull lots of air. I don't know if they fit on the stock radiator, but hopefully someone else can chime in there. Does it have the wire pigtails at least?
As far as controlling it, you can get as simple or as fancy as you want. There's some discussion about controlling electric fans in another thread a bit ago, here
http://www.montecarloss.com/community/ubbthreads.php?ubb=showflat&Number=1047395#Post1047395

If you are willing to spend a few dollars in exchange for a relatively turn-key wiring solution, I think Jabin (username GMachinz) has some options for two speed relay setups. If you want to keep it as close to $0 as humanly possible, temperature switches and relays are pretty cheap, find an open coolant temp switch port, screw in a switch with the right temp setting for your engine, run the wire to the trigger on a relay and kick both fans on. Run another relay off of the AC clutch signal that will also kick both fans on. It isn't ideal, but that will work.
If you want the fans to not kick on as hard, go to the wrecking yards and find a Buick or Cadillac with the same fan plugs and get the resistor harness assembly. If you have a mild engine, you can probably run both fans in low speed only (running through the resistor) and be set, and when they kick on they will start MUCH smoother.


Sometimes you just need a bigger hammer...

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1048234 - 02/16/17 12:09 PM Re: Electric Fan Question [Re: runupfront]  
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Jameson Offline
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Jameson  Offline
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Elizabeth City, NC
They will need custom brackets to mount up and a cutlass radiator top plate. But the fans will work just fine, many people use to swap to the Fbody radiator as it had plastic tanks and aluminum core many years ago as replacement Gbody radiators were still brass.


1988 Monte Carlo SS Blown 5.3/T56 swap, Way to many mods to list.
2005 Joe Gibbs Silverado #0396
1970 Monte Carlo

[Linked Image]
#1048236 - 02/16/17 02:44 PM Re: Electric Fan Question [Re: runupfront]  
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upflying Offline
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upflying  Offline
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Reno, NV
I have gen4 Camaro Z28 fans in my car. Radiator zip ties hold it to the back of my stock radiator.
You will need the oem pigtails to wire it to a relay.

Last edited by upflying; 02/16/17 02:45 PM.

86 MCSS Notchback coupe, LS3, 4L65E, column shift, silver with maroon bench interior

#1048238 - 02/16/17 04:14 PM Re: Electric Fan Question [Re: runupfront]  
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gmachinz Offline
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gmachinz  Offline
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Des Moines, Iowa
I've also got universal aluminum upper hose T's and are threaded (14mm) for using a dual temp BMW fan switch now. Just another option vs thread in switches. I carry the OEM/NOS BMW stuff now.


gbodyparts1234@yahoo.com

HARNESSWORX
#1048242 - 02/16/17 08:09 PM Re: Electric Fan Question [Re: runupfront]  
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Posts: 411
runupfront Offline
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runupfront  Offline
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Eatonton, GA
Thanx all - I think I'm gonna buy it - now that I have some info about it. Doesn't sound like too bad an install.

Thanks again guys!


Pete Scuderi
1986 AeroCoupe
#1048243 - 02/16/17 08:55 PM Re: Electric Fan Question [Re: runupfront]  
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SickSpeedMonte Offline
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SickSpeedMonte  Offline
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MD
I had a DIY fan setup in my car. I was using cheap relays in a project box that I made and eventually one of the Chinese relays stuck and started to melt the housing.

So I bought a harness from Jabin (gmachinz). He uses quality components. I am using the harness to drive a Mark 8 fan which pulls a crazy amount of current, and they handle it. My setup will go 3 speeds. He includes a nice resistor board too, to get the 3 speeds out of a single fan motor.

The temperature switches that he recommended were a little too hot for me. I would actually purge a little coolant in traffic. I ended up permanently grounding one of the temp switch leads the last time out so the fan would run on low any time the ignition is turned on. I just need to get another lower temperature switch.

I intend to have two temperature switches (one a little higher than the other) and the third speed will be triggered by the A/C.

#1048246 - 02/16/17 10:09 PM Re: Electric Fan Question [Re: runupfront]  
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Hunter79764 Offline
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Hunter79764  Offline
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Posts: 723
Grand Prairie, Tx
I wired up 3 speeds on mine as well, and run the low speed constantly with ignition. It pulls almost no power, but moves enough air to keep from cycling in normal weather. As a bonus, it also keeps the inrush current down when it does kick in to higher speeds (the two fan outputs from the ECM), so the lights don't dim etc., and you just hear a gradual ramp up rather than sudden roar that you get when they go from fully off to fully on.


Sometimes you just need a bigger hammer...

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1048248 - 02/16/17 11:33 PM Re: Electric Fan Question [Re: runupfront]  
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gmachinz Offline
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gmachinz  Offline
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Des Moines, Iowa
Are both of you guys running my 3-speed resistor harness then? I'm glad to hear my fan harnesses are doing great for you!


gbodyparts1234@yahoo.com

HARNESSWORX
#1048273 - 02/17/17 01:37 PM Re: Electric Fan Question [Re: runupfront]  
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Hunter79764 Offline
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Hunter79764  Offline
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Grand Prairie, Tx
Truth be told, I probably got the 3 speed idea from you, but actually I pieced together my own from the junkyard and from HVAC relays I've got. But I know you make some quality stuff that takes the guess work and experimentation out of it, and makes it look a lot cleaner as well.


Sometimes you just need a bigger hammer...

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1048578 - 03/02/17 02:02 PM Re: Electric Fan Question [Re: runupfront]  
Joined: Jul 2003
Posts: 9,145
SickSpeedMonte Offline
10+ Year
SickSpeedMonte  Offline
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Joined: Jul 2003
Posts: 9,145
MD
I'm running your 3-speed kit Jabin. It's running great with my Mark 8 fan.


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