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 Post subject: mechanical fan; can it be removed????
PostPosted: Mon Apr 19, 2010 8:08 pm 
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:dizzy: :?: I was looking at my cooling system on my 02 jeep liberty sport v6, and noticed that it has 2 fans, a mechanical and a electric. I'm wondering if i can remove the power sucking mechanical fan and just run off the electric. :JEEPIN:


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Tue Apr 20, 2010 5:52 pm 
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Yes,the mechanical fan is part of the HD cooling and aids in low speed cooling when towing.


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Wed Apr 21, 2010 8:42 am 
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Many Liberties only have the electric fan.

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Thu Apr 22, 2010 4:52 pm 
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So just to be clear, I can remove the mechanical fan and fan clutch and just run off the electric fan. But Its not a good idea if i'm planning on towing or low speed wheeling. please correct me if i'm wrong.


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Thu Apr 22, 2010 5:00 pm 
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with a 2002 with the better rad, unless you do a bunch of crawling in a high heat state like AZ or something, i wouldn't think twice about removing it

even if it's removing it 9 months of the year

done alot of extended idles, crawling in 4 high in powder sand, never had any heating issues without a mech fan

however, it would probably make me 'feel' better during the peak of the summer when i'm out camping

but other than that, it doesn't need it, elec fan rarely ever, EVER, comes on as it is

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Sat Apr 24, 2010 10:25 pm 
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theSCkid wrote:
:dizzy: :?: I was looking at my cooling system on my 02 jeep liberty sport v6, and noticed that it has 2 fans, a mechanical and a electric. I'm wondering if i can remove the power sucking mechanical fan and just run off the electric. :JEEPIN:


I agree, don't remove the mechanical fan. It engages when it's needed. The electric fan only comes on when the PCM decides it needs to. You could easily overheat your engine if you rely on it alone.

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Sat Apr 24, 2010 10:57 pm 
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lol.....

agree with who or with what?

noone in the thread has advised against removing it outside of the extended lowspeeds in high heat or low speed towing

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Mon Apr 26, 2010 8:35 am 
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LibertyFever wrote:
theSCkid wrote:
:dizzy: :?: I was looking at my cooling system on my 02 jeep liberty sport v6, and noticed that it has 2 fans, a mechanical and a electric. I'm wondering if i can remove the power sucking mechanical fan and just run off the electric. :JEEPIN:


I agree, don't remove the mechanical fan. It engages when it's needed. The electric fan only comes on when the PCM decides it needs to. You could easily overheat your engine if you rely on it alone.

You do know that the electric fan is the prime cooling fan,the mechanical fan is only a aid at low speeds like when towing.The mechanical fan will not engage until much later after the electric fan is already running and the engine temps reach 230 degrees or so.


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Mon Apr 26, 2010 11:56 am 
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JeepinJarhead03 wrote:
lol.....

agree with who or with what?

noone in the thread has advised against removing it outside of the extended lowspeeds in high heat or low speed towing


...I agree

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Tue Feb 15, 2022 2:01 pm 
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There are fan clutches that engage at lower temps such as the Hayden 2905 at I think 195 vs the stock 220 degrees also there is the 11 blade chevy fan upgrade.


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Tue Feb 15, 2022 10:35 pm 
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Why is everyone installing a Chevy fan when the 05 3.7 fan fits and it’s a direct replacement? Our shop use to build airplanes and the books on prop design shows more airflow under 3500 with the mopar fan part number 52079654AE and the stock crd 5 blade steel flows more above 3500 so for what it is just get the stock 3.7 mechanical fan… I run it on all mine (3) and the overheating is gone, the one I drive use to overheat pulling a grade in 95 + heat with the ac running and I’d have to slow to 60 with the ac off but with the mopar plastic fan it won’t pass the half way in 110 doing 75-80 up the same hill with the ac on… I have been running them for years now and they also fit the grand Cherokee with the 5.9 so it moves some air at a lower rpm for sure


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Tue Feb 15, 2022 11:15 pm 
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The 11 blade GM fan allows you to use the Hayden severe duty fan clutch designated for the large 6.0 V8 GM trucks with heavy duty cooling system with AC & towing package.
Also, the GM fan can be purchased at about half the cost of the OEM Mopar plastic fan. The GM fan & clutch are both available through NAPA and other parts distributors.

If you reside in colder climate locations, you may not really need this mod!
Having pioneered this modification several years ago due to the poor cooling in the very hot high humidity conditions of the south when towing or driving in town in stop and go traffic with the stock Mopar fan, I can certainly attest to the fact that adding the GM fan & HD clutch has been a vast improvement.
It helps lower transmission temperatures when towing and greatly improved AC performance at low speeds in town in 100+ temperatures & very high humidity conditions.
Quote:
NAPA Part no’s (fitment: Chevrolet Truck)
GM Severe Duty Fan Clutch NAPA PN: 271625
GM 11 blade HD Cooling Fan NAPA PN: 8552223
Requires four (4) GM 11516869 mounting bolts M10X1.5X18mm (mounts fan to clutch)

The GM fan & fan clutch is designed for the GM 6.0L V8 engine with HD cooling, AC, w/towing package.
ACDelco Fan Clutch PN 20913877
Hayden Fan Clutch PN: HY 2786 or 2986 or Four Seasons PN: 36973
ACDelco GM11 blade fan: PN: 15976889

Bottom line, If you don't need or want improved cooling using the GM fan/clutch conversion, that's perfectly OK! It's your choice...
Just a slightly better mousetrap. :lol:

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 Post subject: mechanical fan; can it be removed????
PostPosted: Tue Feb 15, 2022 11:23 pm 
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I will have to look into the difference between the Hayden Chevy 6.0 and the Hayden kJ crd fan clutches, I will reach out to my vendors tomorrow and ask. The mopar fan is only $140 for the 3.7 11 blade fan and it fits perfect with no other mods. How hot is it where you live? Here in south eastern wa it regularly reaches 100+ for a month or two each year, some times 110+ for days or weeks and the mopar fan plus Hayden crd specific clutch work awsome


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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Wed Feb 16, 2022 4:17 am 
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My66dodge wrote:
I will have to look into the difference between the Hayden Chevy 6.0 and the Hayden kJ crd fan clutches, I will reach out to my vendors tomorrow and ask. The mopar fan is only $140 for the 3.7 11 blade fan and it fits perfect with no other mods. How hot is it where you live? Here in south eastern wa it regularly reaches 100+ for a month or two each year, some times 110+ for days or weeks and the mopar fan plus Hayden crd specific clutch work awsome

The GM 11 blade fan can be found for around $50 bucks, a whole lot cheaper than the Mopar fan and I believe the GM fan is a tiny bit larger.
Here in the southeast in the summertime, we see 100+ days with extremely high humidity (over 90%).

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Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
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Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount

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 Post subject: Re: mechanical fan; can it be removed????
PostPosted: Wed Feb 16, 2022 12:02 pm 
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For what its worth, I have the 3.7L plastic fan and the heavy duty clutch and it has performed flawlessly down here in the SoCal desert. Summer temps are in the 105 and hilly desert terrain. Also I drove the jeep to MOAB last year in April and ran some of the Badge of Honor trails and never overheated driving there or while on the trails.

I don't think you can go wrong with either fan you choose. Good upgrade!

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