FAN MOD (do you mind) - Cherokee SRT8 Forum
WK1 General Performance Discussion If you are planning on modifying your Jeep Grand Cherokee SRT8 with a performance enhancing modification, this is the section to post about it.

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post #1 of 57 (permalink) Old 04-06-2007, 08:40 PM Thread Starter
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FAN MOD (do you mind)

Ok, I have got the fan mod figured out, But it is very different then my origianal plans. Looking further into the fuse box and relay I have come to find that there is no wires going to the switch side of this relay. The PCM that controls this function is mounted directly to the fuse/relay box that feeds a circuit board.

I dont like testing PCM inputs and I dont want to run the switch through the PCM for fear of back feeding into it. So I found a very simple solution but in my mind it's a slight short cut. But it will work perfect.

We tap a wire to the switched(-) side of the removed relay,replace the relay and hook the wire to a grounded switch. Only problem is you will have a wire comming out of the top of your fuse box. But also makes it easy for removal on dealer visits If you all are ok with that i will carry on and document the install on the SRT .mac site of mine.


p.s. I feel this is the quickest, cheapest, safest, way. 0 cut factory wires, no 12V supply. Simple simple simple

FASTmade Ediff & TCM switches, 170 Stant, B&B Catback, Dynamic Heads, FRE Hellfire Cam, Kooks LT's
ARIZONA SPEED & MARINE Vortech SuperCharger Kit, ASM Phenolic Spacers, UniChip,
B&G StageII, UniChip, Kenne Bell Boost a Pump, Walsh Racing Heat Exchanger.

MOD DIRECIONS

Last edited by FastSRT8GC; 04-06-2007 at 08:43 PM.
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post #2 of 57 (permalink) Old 04-06-2007, 08:54 PM
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Re: FAN MOD (do you mind)

document away.

2007 gcsrt8
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post #3 of 57 (permalink) Old 04-06-2007, 09:24 PM
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Talking Re: FAN MOD (do you mind)

sounds great man. Looking forward to it.
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post #4 of 57 (permalink) Old 04-06-2007, 10:40 PM Thread Starter
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Re: FAN MOD (do you mind)

FAN MOD is done on my end. Photos are take just have to do the write up and post. Mid day Saturday
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post #5 of 57 (permalink) Old 04-07-2007, 08:57 AM
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Re: FAN MOD (do you mind)

....so what your saying is, pull the fan relay under the hood.....
....tap a wire into the negative side of the relay.....
....re-install the relay, take a toggle switch, connect to that wire,
and ground, for an easy under the hood at the track switch?

or you can run it inside for an anytime switch?

Is it that easy?

thanks,

snowed here, not taking Jeep out, want to tinker.

2007 Red Rock.... slightly modded, but BAD 2 the BONE!
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post #6 of 57 (permalink) Old 04-07-2007, 11:32 AM
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Re: FAN MOD (do you mind)

You guys are lucky Chris is so nice. With my 03 cobra I have all the little tricks like this and I always keep it to my self.
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post #7 of 57 (permalink) Old 04-07-2007, 12:44 PM Thread Starter
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Re: FAN MOD (do you mind)

Quote:
Originally Posted by cobrakid
....so what your saying is, pull the fan relay under the hood.....
....tap a wire into the negative side of the relay.....
....re-install the relay, take a toggle switch, connect to that wire,
and ground, for an easy under the hood at the track switch?

or you can run it inside for an anytime switch?

Is it that easy?

thanks,

snowed here, not taking Jeep out, want to tinker.

Yep thats about all of it. I almost have the page done. My wife dragged me to the Mall YEEHA so much fun, but I will finish it now
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post #8 of 57 (permalink) Old 04-07-2007, 02:13 PM Thread Starter
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post #9 of 57 (permalink) Old 04-07-2007, 02:43 PM
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Re: FAN MOD (do you mind)

Woe
Quote:
Originally Posted by FastSRT8GC
Wow FAST, that is the easiest version yet. May need to rethink my GSM type installation.
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post #10 of 57 (permalink) Old 04-07-2007, 02:52 PM Thread Starter
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Re: FAN MOD (do you mind)

Yea very easy ....but we are researching one problem.

Problem corrected never mind.... I am retarded. I grabbed the Lo instead of the HI Web site updated with the correct photos.

Last edited by FastSRT8GC; 04-07-2007 at 04:02 PM.
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