Electric fan cooling.

[SpareParts]

Im thinking of swapping to E-Fans but before i do, i have a question.
How do they cool compare to the HD clutch fan? About the only thing i ever tow is a 5K trailer hauling quads.
Reason im asking is my truck runs on the hot side 210 ish and i found my fan clutch is bad so it needs to be replaced. Only has a slight drag when hot. Has more drag when cold.
Getting the E-Fans is not to hard and i have HP tuners so turning them on is easy just need to come up with a wire harness.

 

[OR VietVet]

Do a search. There are numerous threads about doing this and the benefits.

I have electric fans and my temp gauge runs around 205 all the time.

 

[SpareParts]

read a bunch but maybe not the right one. Seems they all ask about what fans, wiring or how to turn on.
Can't find a comparison.

 

[OR VietVet]

Others will chime in with details. I think that others have used the OE wiring that they got with fans and is controlled by the tune and proper operation by sensor(s) and of course when a/c comes on. The actual install of the system is not up my alley because I already have it. I would assume that the threads here show the install.

 

[SpareParts]

Yes all i read talk about install, wiring etc.
Im wondering about a comparison.

 

[OR VietVet]

Yes all i read talk about install, wiring etc.
Im wondering about a comparison.

Well, I can answer that with my own comparison. I had a 2002 Tahoe with a fan clutch and the temps had a range they worked in. It depended on how hard I drove it and any passes I accelerated hard with, out here in the PNW. IIRC, my temp range was from the 215 mark to about 190 and all that could happen on the same drive depending on driving conditions and ambient temp. With my electric fans, my temps are very constant at the 205 to 210 mark. A year ago July, I was on a long 5000+ mile trip and went up and accelerated hard up many passes and not once did my temp climb above 210.

 

[S33k3r]

Common wisdom is that eFans do not cool as well as clutch fans. Less common is that eFans don't cool as well as clutch fans when you need them the most: under load. Ultimately, it depends on how you set your fans up. If memory serves, the fastest you can power a clutch fan is when you are at or near your red line, or 6500 RPM (in most cases). However, clutch fans do not cool as well under light load (like stop and go traffic in busy cities). So if you tune your eFans to cool as you need in the conditions you drive, you should be just fine.

The things switching to eFans gets you are more room in the engine compartment, maybe .5 mpg (depending on how heavy your foot already is), and maybe 1 HP or similar.

Electric Fan vs Clutch Fan Dyno: Which Is Better?

Electric fan vs Clutch fan?

What type of cooling fan should I use?

Fan clutch vs electric fan

Electrical or fan clutch

@OR VietVet I searched engine & drive train and Performance sections, and didn't really see any comparison stuff. Would you mind taking a look?

 

[OR VietVet]

Electric fan swap. Got a few questions

Ive done a bit of reading but have not found all the answers to my questions. I have a 2004 Gmc Yukon Denali and it has a clutch fan. It had been replaced within the last year along with a cold case radiator, belt, and etc but it is loud when driving most of the time I turn the a/c on. I want to...

www.tahoeyukonforum.com

Electric Fan Conversion Question

I’m in the process of electric fan conversion on my 03 Tahoe. I pulled the factory harness off my 05 Yukon. From what I can tell, I have thick blue/black and yellow/grey wires going to fans. Red for power. The 2 small wires blue and green go to PCM pins. Question is, where is the black ground...

www.tahoeyukonforum.com

Electric Cooling Fan Temp Settings

Hello all, Couldn’t find this info anywhere… Had some maintenance done to the Yukon and the tuner at the shop tweaked the factory fan set points. Why? I don’t know. It never has ran hot and always kicked on the fans as needed (if warm out and or running the AC). Does any one know the factory...

www.tahoeyukonforum.com

Dual Electric Fan Replacement

I have a 2001 Yukon XL 1500 (5.3) that I bought a couple of years ago. The former owner had previously installed a dual electric fan, which now needs to be replaced as only one of the fans is operational and it is a single (duel fan) unit. I have crawled over and under trying to find any form of...

www.tahoeyukonforum.com

tuner for electric fans

Howdy I'm getting ready to put eletric fans on my 02 tahoe. Is there some one around San Bernardino cal that can to the tune for the fans. Thanks JD

www.tahoeyukonforum.com

Electric fans with clutch fan possible?

Has anyone ran electric fans on the forward side of the radiator while keeping the clutch activated fan on the rear side of the radiator? I live in southern New Mexico and have always had trouble at idle in high 90’s and triple digit weather to keep the truck cool. Yesterday at the drive through...

www.tahoeyukonforum.com

 

[SpareParts]

Thanks Guys!

 

[dps01]

E-Fan Swap…
Lots of information (and theories) on the numerous threads regarding this subject.

Collected the parts to for an OEM setup to swap into a 2003 Z71 (they are in a big dusty box just waiting to be installed).

Question:

Would installing a switch on one or both of the ECM wires and going to ground cause issues with the computer or set a code? Taking them to ground should allow the fans to operate, but not sure about “unintended consequences” …

Looking for a solution that would allow me to turn the fans on at will.